Best Pressure Washer Detergent

When it comes to detergent for a pressure washer, not all soaps will work. Most of the time, because of the water to soap ratio, it is recommended that you use a concentrated detergent to ensure it is strong enough to cut through the toughest grime. There are not many detergent options available for a pressure washer, but of the ones that are available, they each do different jobs. You will have to decide which one you feel is right for the job at hand.

See The Best Selling Pressure Washer Detergents

Types of Detergent

There are some pressure washer detergents that cause very little foam. In some cases, this may be exactly what you want, in others you may prefer more foam, especially if you are using a foam cannon. The main brand that is created to create very little foam is Shark cleaning detergents. There are a variety of them available and all of them clearly state that they produce very little foam. This may be ideal for washing your deck or your driveway, but when trying to foam your car, this will not be what you want from your detergent. Therefore, it is important that you look closely to discover whether it foams the way you would expect for it to. To help you with this, here are our picks for the best pressure washer detergent available on Amazon.

It is also not recommended that you use dish soaps in your pressure washer because they may hurt your eyes or an animal’s eyes if your pet happens to get in the way and catches some of the spray. However, there are people who say that this is not a concern and that any type of soap in a concentrated pouch can work, but you have to figure out the right amount of water mixed with how many pouches. For this you will have to use your own discretion, but most people do think it is best to stick with the concentrated detergents that are designed to work with a pressure washer.

The Best Detergent for Pressure Washers

Shark General Purpose Cleaner

The Shark brand is one that will not produce a lot of foam. However, they are biodegradable and will not damage plant life that you may have around your home. You can use this detergent on areas both inside and outside of your home without worry. It can be used safely on aluminum, stainless steel, plastics, vehicles, and more.


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Briggs & Stratton Vehicle and Boat Wash

This cleaning solution was designed for pressure washers of all types and when you are finished washing your car, you will notice a very definite shine. This is because it breaks down the grime that tends to build up on cars, boats, RVs and more. One 32 ounce bottle is able to blend together with water to make up to 4 gallons of cleaning solution. You do need to mix it with water before you put it into the detergent tank and according to reviews, one bottle will wash a vehicle about 4 times.


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Briggs & Stratton Multi-Purpose Cleaner

This cleaning concentrate is ideal for a variety of cleaning chores. It can remove not only dirt, but mold and mildew as well. It is safe to use on siding, patios, pool areas, and more. In fact, you can use it anywhere that you have a buildup of dirt that you want to get rid of. With one bottle, you can make 4 gallons of cleaning solution. You may be able to use a little more if you feel that you need more foam. If you enjoy using this type of soap or need a little more, there is also a gallon jug of it available as well.


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Karcher 9.558-120.0 20X Multi-Purpose Cleaner

This is a multi-purpose pressure washer detergent. It is available in a 1 qt bottle and with it you can make up to 5 gallons of cleaner. It is specifically designed for use with pressure washers (not just Karcher brand), and it does have an easy to follow, true measure system, which can take the guess work out of mixing. It will not leave a residue behind. It is eco-friendly and biodegradable. This detergent is made in the USA to meet all safety regulations. It is also available as a vehicle wash.


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Most of these soaps will work great in a foam cannon where you try to create a lot of foam, however, the foam is best suitable for washing vehicles. This means you will most likely get more foam by either lessening the water content when you mix the concentrate or when you use the wash that is specifically designed for washing vehicles.

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