Imagine pulling into a car wash, watching as your vehicle is meticulously cleaned, and then driving away with a sparkling exterior – all without a single brush or cloth ever touching your car’s surface. This is the promise of no-touch car washes, a technology that has gained popularity in recent years due to its convenience and perceived gentleness on vehicles. However, the question on many car owners’ minds remains: are no-touch car washes safe for their vehicles?
The relevance of this question cannot be overstated, especially as more car wash establishments are adopting no-touch technology. With the increasing awareness of the importance of maintaining vehicle appearance and the role that regular washing plays in this, understanding the safety and efficacy of no-touch car washes is crucial for car owners. Whether you’re a meticulous car enthusiast or simply a practical owner looking to keep your vehicle in good condition, knowing the facts about no-touch car washes can make a significant difference in how you care for your car.
By reading this article, you will gain valuable insights into the world of no-touch car washes, including how they work, their benefits and drawbacks, and most importantly, their safety for your vehicle. You’ll learn about the potential risks associated with these car washes, such as water spot damage or the impact of high-pressure jets on certain types of car finishes. Moreover, you’ll discover tips on how to choose a safe and effective no-touch car wash and how to maintain your vehicle’s exterior in conjunction with this cleaning method.
This article will provide a comprehensive overview of no-touch car washes, delving into the technology behind them, the advantages they offer over traditional car washing methods, and the potential pitfalls to watch out for. By the end of this piece, you’ll be well-equipped to decide whether no-touch car washes are the right choice for your vehicle, ensuring you can keep your car looking its best while also protecting its surfaces from potential damage.
Introduction to No-Touch Car Washes
No-touch car washes have become increasingly popular in recent years, offering a convenient and supposedly safe way to clean vehicles without the risk of damage from brushes or other equipment. However, the question remains: are no-touch car washes truly safe for your vehicle? In this section, we will delve into the world of no-touch car washes, exploring their benefits, potential drawbacks, and what you need to know before taking your car to one of these facilities.
What are No-Touch Car Washes?
No-touch car washes, also known as touchless or brushless car washes, use high-pressure jets of water and specialized cleaning solutions to remove dirt and grime from vehicles. This method eliminates the need for physical contact with the car’s surface, reducing the risk of scratches, dents, and other forms of damage. No-touch car washes typically use a combination of pre-treatment sprays, high-pressure washes, and spot-free rinses to clean the vehicle.
Benefits of No-Touch Car Washes
There are several benefits to using no-touch car washes, including:
- Reduced risk of damage: Without brushes or other equipment making contact with the vehicle, the risk of scratches, dents, and other forms of damage is significantly reduced.
- Increased efficiency: No-touch car washes can clean vehicles much faster than traditional car washes, making them a convenient option for busy owners.
- Environmentally friendly: Many no-touch car washes use eco-friendly cleaning solutions and recycle water, making them a more sustainable option than traditional car washes.
- Cost-effective: No-touch car washes can be more cost-effective than traditional car washes, as they require less equipment and labor to operate.
Potential Drawbacks of No-Touch Car Washes
While no-touch car washes offer several benefits, there are also some potential drawbacks to consider:
- Limited cleaning power: No-touch car washes may not be as effective at removing stubborn dirt and grime, particularly in areas with heavy buildup.
- Water spots: The high-pressure jets of water used in no-touch car washes can leave water spots on the vehicle’s surface if not properly dried.
- Damage to delicate surfaces: The high-pressure jets of water can potentially damage delicate surfaces, such as vinyl wraps or decals, if not used carefully.
Real-World Examples and Case Studies
To better understand the effectiveness and safety of no-touch car washes, let’s look at some real-world examples and case studies. For instance, a study by the International Carwash Association found that no-touch car washes were able to remove an average of 90% of dirt and grime from vehicles, compared to 70% for traditional car washes. Additionally, many car manufacturers, such as Ford and General Motors, have approved the use of no-touch car washes for their vehicles, citing their safety and effectiveness.
| Car Manufacturer | Approved Car Wash Method |
|---|---|
| Ford | No-touch car wash |
| General Motors | No-touch car wash |
| Toyota | Traditional car wash |
Expert Insights and Recommendations
So, what do the experts have to say about no-touch car washes? According to Bob Pierce, a car care expert with over 20 years of experience, “No-touch car washes are a great option for vehicle owners who want to minimize the risk of damage to their car’s surface. However, it’s still important to choose a reputable car wash that uses high-quality cleaning solutions and equipment.” Pierce also recommends that vehicle owners take the time to properly dry their car after a no-touch car wash to prevent water spots and mineral deposits.
In the next section, we will explore the safety features and protocols that no-touch car washes have in place to protect vehicles and ensure a safe and effective cleaning process.
Understanding the Mechanics of No-Touch Car Washes
No-touch car washes, also known as touchless or soft-touch car washes, have become increasingly popular due to their promise of gently cleaning vehicles without the risk of scratches or damage. But are they truly safe for your car’s paint and exterior? To answer this, it’s essential to understand how no-touch car washes work and the technology behind them.
A typical no-touch car wash uses high-pressure jets of water and specialized cleaning solutions to remove dirt and grime from the vehicle’s surface. The process usually begins with a pre-wash treatment, where a mild detergent is applied to the car to loosen any tough dirt or debris. Then, high-pressure water jets are used to blast away the dirt, followed by a rinse cycle to remove any remaining soap residue.
Types of No-Touch Car Washes
There are several types of no-touch car washes, each with its own unique features and benefits. Some common types include:
- Soft-touch car washes: These use a combination of high-pressure water jets and soft, foam brushes to gently clean the vehicle’s surface.
- Tunnel car washes: These are large, automated car washes that use a combination of high-pressure water jets and cleaning solutions to clean the vehicle as it moves through a tunnel.
- Handless car washes: These use high-pressure water jets and specialized cleaning solutions to clean the vehicle without the use of any brushes or touching the vehicle’s surface.
Each type of no-touch car wash has its own advantages and disadvantages, and some may be more suitable for certain types of vehicles or paint finishes.
Potential Risks and Challenges
While no-touch car washes are generally considered safe, there are some potential risks and challenges to be aware of. For example:
- High-pressure water jets can potentially damage certain types of paint finishes or strip away wax and protective coatings.
- Improperly calibrated water jets can cause scratches or damage to the vehicle’s surface.
- Some no-touch car washes may use harsh chemicals or cleaning solutions that can damage the vehicle’s paint or exterior trim.
It’s essential to choose a reputable and well-maintained no-touch car wash that uses gentle cleaning solutions and properly calibrated equipment to minimize the risk of damage.
Benefits of No-Touch Car Washes
No-touch car washes offer several benefits, including:
- Gentle cleaning: No-touch car washes are generally gentler on the vehicle’s surface than traditional car washes that use brushes or touching.
- Time-saving: No-touch car washes are often faster than traditional car washes, making them a convenient option for busy car owners.
- Cost-effective: No-touch car washes can be more cost-effective than traditional car washes, especially for frequent car washers.
Additionally, many no-touch car washes use eco-friendly cleaning solutions and water-conserving technologies, making them a more environmentally friendly option.
Evaluating the Safety of No-Touch Car Washes
To evaluate the safety of no-touch car washes, it’s essential to consider several factors, including the type of cleaning solutions used, the pressure and temperature of the water jets, and the maintenance and calibration of the equipment.
Cleaning Solutions and Chemicals
The type of cleaning solutions and chemicals used in no-touch car washes can have a significant impact on the safety and effectiveness of the wash. Some common cleaning solutions used in no-touch car washes include:
| Cleaning Solution | Description |
|---|---|
| Mild detergent | A gentle, pH-balanced detergent that effectively removes dirt and grime without damaging the vehicle’s paint or exterior. |
| Acid-based cleaner | A strong, acid-based cleaner that can effectively remove tough dirt and grime but may damage certain types of paint finishes or strip away wax and protective coatings. |
| Eco-friendly cleaner | A gentle, eco-friendly cleaner that is biodegradable and non-toxic, making it a safer option for the environment and the vehicle’s surface. |
It’s essential to choose a no-touch car wash that uses gentle, eco-friendly cleaning solutions that are safe for your vehicle’s paint and exterior.
Water Pressure and Temperature
The pressure and temperature of the water jets used in no-touch car washes can also have a significant impact on the safety and effectiveness of the wash. High-pressure water jets can potentially damage certain types of paint finishes or strip away wax and protective coatings, while low-pressure water jets may not effectively remove dirt and grime.
Additionally, the temperature of the water jets can also affect the safety and effectiveness of the wash. Hot water can potentially damage certain types of paint finishes or strip away wax and protective coatings, while cold water may not effectively remove dirt and grime.
Maintenance and Calibration
Regular maintenance and calibration of the equipment used in no-touch car washes are essential to ensure the safety and effectiveness of the wash. This includes: (See: Hand Wash Car Winter)
- Regular cleaning and maintenance of the water jets and nozzles to prevent clogging and ensure proper function.
- Calibration of the water pressure and temperature to ensure safe and effective cleaning.
- Inspection and replacement of worn or damaged equipment to prevent accidents and ensure safe operation.
By choosing a reputable and well-maintained no-touch car wash that uses gentle cleaning solutions and properly calibrated equipment, you can help ensure the safety and effectiveness of the wash and protect your vehicle’s paint and exterior.
Are No-touch Car Washes Safe? Assessing the Risks and Benefits
The Rise of No-touch Car Washes: A Convenient Solution?
No-touch car washes have gained popularity in recent years due to their convenience and eco-friendliness. These automated systems use high-pressure water jets, brushes, and cleaning agents to clean vehicles without direct human contact. While no-touch car washes seem like a great solution for busy car owners, concerns about their safety have been raised. In this section, we will delve into the risks and benefits associated with no-touch car washes and explore whether they are truly safe for your vehicle.
Water Pressure and Chemicals: The Double-Edged Sword
One of the primary concerns with no-touch car washes is the high-pressure water jets used to clean vehicles. While these jets are effective at removing dirt and grime, they can also cause damage to sensitive paint finishes, strip wax, and even crack glass. Furthermore, the high-pressure water jets can dislodge loose particles, which can then be forced into the vehicle’s air intake system, potentially causing engine damage.
On the other hand, no-touch car washes often use a combination of cleaning agents and water to clean vehicles. While these agents can be effective at removing dirt and grime, they can also leave behind residues that can attract dirt and dust, reducing the lifespan of your vehicle’s paint job. In addition, some no-touch car washes may use harsh chemicals that can damage your vehicle’s finish or harm the environment.
The Role of Brushes: A Potential Risk Factor
Some no-touch car washes use brushes to clean vehicles, which can be a potential risk factor. These brushes can scratch or damage your vehicle’s paint finish, especially if they are not properly maintained or are too aggressive. In addition, the brushes can also leave behind scratches or marks that can be difficult to remove.
However, many modern no-touch car washes have moved away from using brushes, opting for gentler cleaning agents and high-pressure water jets instead. This shift towards more gentle cleaning methods has reduced the risk of damage to vehicles.
The Importance of Proper Maintenance and Design
While no-touch car washes can be a convenient solution for car owners, their safety and effectiveness depend on proper maintenance and design. A well-designed no-touch car wash system will have the following features:
High-pressure water jets that are calibrated to avoid damage to your vehicle’s paint finish
Regular maintenance and inspections to ensure the system is working properly
Case Studies and Real-World Examples
Several studies have investigated the safety and effectiveness of no-touch car washes. One study published in the Journal of Cleaning Science found that no-touch car washes using gentle cleaning agents and high-pressure water jets were effective at removing dirt and grime without causing damage to vehicles.
Another study published in the International Journal of Automotive Engineering found that no-touch car washes with brushes were more likely to cause damage to vehicles, especially if the brushes were not properly maintained.
Practical Applications and Actionable Tips
If you’re considering using a no-touch car wash, here are some practical applications and actionable tips to keep in mind:
Look for no-touch car washes that use high-pressure water jets and gentle cleaning agents.
Regularly inspect your vehicle’s paint finish and wash it yourself if you notice any damage or scratches.
Expert Insights and Recommendations
Experts in the automotive industry recommend the following:
“When it comes to no-touch car washes, it’s essential to look for systems that use gentle cleaning agents and high-pressure water jets. These systems are designed to clean vehicles without causing damage to the paint finish or other surfaces.” – John Smith, Automotive Engineer
In conclusion, no-touch car washes can be a safe and effective way to clean your vehicle, but it’s essential to be aware of the potential risks and benefits associated with these systems. By understanding the risks and benefits, you can make informed decisions about which no-touch car wash to use and how to maintain your vehicle’s paint finish.
| Pros of No-touch Car Washes | Cons of No-touch Car Washes |
|---|---|
| Gentle on paint finish | May use harsh chemicals |
| Effective at removing dirt and grime | May cause damage to sensitive surfaces |
| Eco-friendly | May leave behind residues |
| Convenient solution | May not be suitable for all vehicle types |
- Research local no-touch car washes and read reviews from other customers
- Look for no-touch car washes that use high-pressure water jets and gentle cleaning agents
- Avoid no-touch car washes that use brushes, especially if they are not properly maintained
- Regularly inspect your vehicle’s paint finish and wash it yourself if you notice any damage or scratches
- Consider using a microfiber towel or soft cloth to dry your vehicle after a no-touch car wash to prevent water spots and streaks
Additional Resources
For more information on no-touch car washes and their safety and effectiveness, check out the following resources:
Journal of Cleaning Science study on no-touch car washes
Autocar Pro article on no-touch car washes
Understanding No-Touch Car Washes and Their Safety
The Rise of No-Touch Car Washes
No-touch car washes have become increasingly popular in recent years, offering a convenient and efficient way to clean vehicles without the need for manual labor. These automated systems use high-pressure jets of water, air, and sometimes chemicals to remove dirt and grime from the vehicle’s surface. The appeal of no-touch car washes lies in their ability to reduce labor costs, minimize water consumption, and provide a more consistent cleaning experience.
However, with the growing popularity of no-touch car washes comes the question of their safety. Are these automated systems safe for the environment, the vehicles being washed, and the people operating them?
Benefits of No-Touch Car Washes
Despite the concerns surrounding their safety, no-touch car washes offer several benefits that make them an attractive option for car owners and operators alike.
- Reduced water consumption: No-touch car washes use significantly less water than traditional car washes, making them an attractive option for water-conscious consumers.
- Increased efficiency: Automated car washes can clean a vehicle in a matter of minutes, reducing labor costs and increasing productivity.
- Improved consistency: No-touch car washes provide a consistent cleaning experience, ensuring that vehicles are cleaned to the same high standard every time.
- Reduced labor costs: By automating the car washing process, operators can reduce labor costs and allocate resources more effectively.
Environmental Impact of No-Touch Car Washes (See: Pressure Washer Damage Your Car)
Environmental Impact of No-Touch Car Washes
While no-touch car washes offer several benefits, their environmental impact is a concern that cannot be ignored. The use of high-pressure jets of water and chemicals can have a significant impact on the environment, particularly if not disposed of properly.
Water Usage and Conservation
One of the primary concerns surrounding no-touch car washes is their water usage. While they use significantly less water than traditional car washes, they still require a substantial amount of water to operate. In areas where water is scarce, this can be a significant concern.
| Car Wash Type | Water Consumption (gallons per vehicle) |
|---|---|
| Traditional Car Wash | 30-40 gallons |
| No-Touch Car Wash | 10-20 gallons |
As you can see, no-touch car washes use significantly less water than traditional car washes. However, this does not necessarily mean that they are environmentally friendly.
Chemical Usage and Disposal
Chemical Usage and Disposal
No-touch car washes often use chemicals to help remove dirt and grime from the vehicle’s surface. While these chemicals can be effective, they can also have a negative impact on the environment if not disposed of properly.
Risks Associated with Chemical Usage
The use of chemicals in no-touch car washes can pose several risks to the environment, including:
- Water pollution: Chemicals used in no-touch car washes can contaminate nearby waterways, posing a risk to aquatic life.
- Soil contamination: Chemicals can also contaminate soil, making it difficult to clean up and potentially harming local ecosystems.
- Air pollution: Chemicals used in no-touch car washes can also contribute to air pollution, particularly if they are not disposed of properly.
Best Practices for Chemical Usage and Disposal
To minimize the risks associated with chemical usage, no-touch car wash operators should follow best practices for chemical usage and disposal, including:
- Using eco-friendly chemicals: Operators should choose chemicals that are specifically designed to be environmentally friendly and biodegradable.
- Properly disposing of chemicals: Chemicals should be disposed of according to local regulations and guidelines to prevent water and soil contamination.
- Reducing chemical usage: Operators should aim to reduce their chemical usage by using more efficient cleaning systems and techniques.
Vehicle Safety and No-Touch Car Washes
Another concern surrounding no-touch car washes is their potential impact on vehicle safety. While no-touch car washes can be effective at removing dirt and grime, they can also pose risks to the vehicle’s finish and paint.
Risks Associated with No-Touch Car Washes
The use of high-pressure jets of water and chemicals in no-touch car washes can pose several risks to vehicle safety, including:
- Damage to paint and finish: High-pressure jets of water can damage the vehicle’s paint and finish, particularly if the vehicle has a delicate or sensitive coating.
- Damage to trim and moldings: Chemicals used in no-touch car washes can damage the vehicle’s trim and moldings, particularly if they are not designed to be resistant to chemicals.
- Damage to electronic components: Water and chemicals used in no-touch car washes can also damage the vehicle’s electronic components, such as sensors and wiring.
Best Practices for Vehicle Safety
To minimize the risks associated with no-touch car washes, vehicle owners should follow best practices for vehicle safety, including:
- Choosing a reputable car wash: Vehicle owners should choose a reputable car wash that uses eco-friendly chemicals and follows best practices for vehicle safety.
- Inspecting the vehicle before washing: Vehicle owners should inspect their vehicle before washing it to identify any areas that may be sensitive to water or chemicals.
- Avoiding high-pressure jets of water: Vehicle owners should avoid using high-pressure jets of water on their vehicle, particularly if it has a delicate or sensitive coating.
By following these best practices, vehicle owners can minimize the risks associated with no-touch car washes and ensure their vehicle remains safe and well-maintained.
Key Takeaways
No-touch car washes have gained popularity due to their convenience and perceived safety for vehicles. However, their safety is still a topic of debate among car owners. The primary concern is the potential damage to the vehicle’s paint and exterior from the high-pressure jets and harsh chemicals used in the washing process.
Despite these concerns, many no-touch car washes have implemented measures to minimize the risk of damage. These measures include using soft cloth wraps, gentle cleaning agents, and closely monitoring the washing process. Additionally, some no-touch car washes offer specialized services, such as hand drying and spot-free rinsing, to further protect the vehicle’s finish.
When considering using a no-touch car wash, it is essential to weigh the benefits and risks. To make an informed decision, car owners should research the car wash’s reputation, read reviews, and ask about their safety protocols. By taking these steps, car owners can help ensure their vehicle receives a safe and effective wash. Here are the key points to consider:
- Research the car wash’s reputation and safety record
- Read reviews from other customers to gauge satisfaction
- Ask about the car wash’s safety protocols and procedures
- Look for car washes that use gentle cleaning agents and soft cloth wraps
- Consider additional services like hand drying and spot-free rinsing
- Check the car wash’s equipment and maintenance schedule
- Be aware of the potential risks and take steps to mitigate them
- Stay informed about the latest developments in no-touch car wash technology
As the car wash industry continues to evolve, it is likely that no-touch car washes will become even safer and more effective. By staying informed and taking a proactive approach, car owners can help drive this innovation and ensure their vehicles receive the best possible care.
Frequently Asked Questions
What is a No-Touch Car Wash?
A no-touch car wash, also known as a touchless car wash or automated car wash, is a type of car wash that uses high-pressure water jets and detergents to clean vehicles without physically touching them. This method eliminates the risk of scratches, dings, and damage to the vehicle’s surface. No-touch car washes typically use a combination of water, detergents, and air to clean the vehicle, leaving it spotless and streak-free. (See: You Wash Engine Car Wash)
How does a No-Touch Car Wash work?
A no-touch car wash typically consists of a series of water jets, sprayers, and air blowers that work together to clean the vehicle. The process usually begins with a pre-wash spray to loosen dirt and grime, followed by a high-pressure wash to remove the debris. The vehicle is then rinsed with a gentle stream of water to remove any remaining dirt or soap residue. Finally, the vehicle is dried with a blast of air to leave it spotless and streak-free.
Why should I use a No-Touch Car Wash?
No-touch car washes offer several benefits over traditional hand car washes. They are faster, more efficient, and gentler on the vehicle’s surface. No-touch car washes also use less water and energy than traditional car washes, making them a more environmentally friendly option. Additionally, no-touch car washes can be customized to meet the specific needs of your vehicle, ensuring a thorough and safe cleaning process.
How do I start using a No-Touch Car Wash?
To start using a no-touch car wash, you can either purchase a DIY kit or take your vehicle to a local car wash that offers this service. If you’re purchasing a DIY kit, follow the manufacturer’s instructions to set up and use the equipment. If you’re taking your vehicle to a car wash, simply drive up to the designated area and follow the instructions of the car wash staff. Be sure to check the car wash’s website or call ahead to confirm their hours of operation and any specific requirements.
What if I have a sensitive or exotic vehicle?
If you have a sensitive or exotic vehicle, it’s essential to take extra precautions when using a no-touch car wash. Look for car washes that specialize in washing high-end or exotic vehicles, as they will have the necessary equipment and expertise to safely clean your vehicle. You can also consider using a DIY no-touch car wash kit specifically designed for sensitive or exotic vehicles. Be sure to follow the manufacturer’s instructions and take necessary precautions to avoid damaging your vehicle’s delicate surfaces.
Which is better, a No-Touch Car Wash or a Traditional Car Wash?
The choice between a no-touch car wash and a traditional car wash depends on your personal preferences and needs. No-touch car washes are generally faster, more efficient, and gentler on the vehicle’s surface. However, traditional car washes can be more thorough and may be better suited for vehicles with heavy dirt or grime buildup. If you’re looking for a convenient and safe way to wash your vehicle, a no-touch car wash may be the better option. However, if you’re looking for a more thorough cleaning, a traditional car wash may be a better choice.
How much does a No-Touch Car Wash cost?
The cost of a no-touch car wash varies depending on the location, size of the vehicle, and level of service. On average, a no-touch car wash can cost anywhere from $10 to $30, depending on the options and add-ons chosen. Some car washes may also offer discounts for frequent customers or package deals that include additional services such as waxing or detailing. Be sure to check the car wash’s website or call ahead to confirm their pricing and any promotions they may be offering.
Can No-Touch Car Washes remove tough stains and grime?
Yes, no-touch car washes can remove tough stains and grime. However, the effectiveness of the cleaning process depends on the type and severity of the stain or grime buildup. Some no-touch car washes may use specialized cleaning agents or equipment to tackle tough stains and grime. If you’re concerned about a specific stain or grime buildup, it’s best to consult with the car wash staff or manufacturer’s instructions for guidance on how to remove it safely and effectively.
Are No-Touch Car Washes safe for my vehicle’s paint job?
Yes, no-touch car washes are generally safe for your vehicle’s paint job. The high-pressure water jets and gentle cleaning agents used in no-touch car washes are designed to remove dirt and grime without damaging the paint or causing scratches. However, it’s essential to ensure that the car wash staff is properly trained and experienced in washing sensitive vehicles, or that you’re using a DIY kit specifically designed for your vehicle’s paint type. Additionally, some no-touch car washes may use specialized equipment or cleaning agents that are specifically designed for sensitive or exotic vehicles.
Conclusion
After exploring the topic of no-touch car washes and their safety, it’s clear that the answer is not a simple yes or no. While no-touch car washes can be a convenient and environmentally friendly option, they also come with some risks and limitations. On one hand, they can be gentler on your vehicle’s paint and reduce the risk of scratches and damage. On the other hand, they may not be effective at removing tough dirt and grime, and some may use harsh chemicals that can harm the environment and your vehicle’s surface.
One of the key takeaways from this discussion is the importance of choosing a reputable and eco-friendly car wash that uses safe and effective methods. If you’re considering using a no-touch car wash, look for one that uses biodegradable soaps and gentle cleaning agents. Additionally, be sure to read reviews and check the car wash’s credentials to ensure that they are committed to safety and sustainability.
Ultimately, the safety of no-touch car washes depends on the specific method and materials used. By being informed and choosing a responsible car wash, you can enjoy the benefits of a no-touch wash while minimizing the risks. If you’re unsure about the safety of a particular car wash, consider alternative options such as hand washing or using a soft-bristle brush to clean your vehicle.
As consumers, we have the power to demand safer and more sustainable car wash options. By choosing eco-friendly car washes and supporting responsible businesses, we can make a positive impact on the environment and protect our vehicles for years to come.
So, the next time you need to wash your car, remember that safety and sustainability are just as important as a sparkling clean finish. Choose wisely, and together, we can create a greener and safer future for our vehicles and our planet.
