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The Generac universal pressure washer detergent concentrate (1 gallon) is available for purchase today.

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Generac Universal Pressure Washer Detergent Concentrate (1 Gallon)

(Based on expert analysis, manufacturer ratings and customer reviews)
4.0 out of 54.0 out of 54.0 out of 54.0 out of 54.0 out of 5
1 Review
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Ships Tuesday, Oct 25th

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Pressure Washer-Safe Detergent
Formulated so it won't harm your pump

Safe For A Variety Of Surfaces
Removes dirt & grime from tough to clean areas

Water Based & Biodegradable
Safer for your landscaping & pets

Fast Acting
Use your pressure washer to spray it on, then rinse it off
Saves time & effort over garden hose & bucket washing

1 Gallon Of Concentrated Formula
More economical than non-concentrated products
Your pressure washer will automatically dilute to proper ratio

Easy To Use
Just add to your on-board tank or drop in the siphon tube

Need Help? Call Our Pressure Washer Experts.
Accessory Grade
8.75 Pounds
Product Length
6.1 Inches
Product Width
12.3 Inches
Product Height
6.1 Inches
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  1 Question
Q: Will this detergent harm plants? Should plants be covered when applying the detergent?
by Dennis from Virginia on April 23, 2015

A: No this is biodegradable and safe around plants. However I do recommend spraying down the plants first with water from your garden hose. This way they will definitely not be affected by the detergent. If not wet down first, sometimes the detergent can cause spotting.
by Brian, Product Expert
Generac 6662 Reviews & Ratings
1 Review  Sort by 
Paul T.
Bradenton, FL
Purchased from Pressure Washers Direct
Purchased 10/17/16
4 out of 54 out of 54 out of 54 out of 54 out of 5
Info On Mixing
i just recieved it, 1gal=16 cups.No info on mixing, to clean mildew & need good info on mixing ????
Paul Recommends This Generac Product
Brian, the Pressure Washer Expert
Product Expert
This is a concentrated pressure washer-safe detergent, so all you would need to do is pour it into the detergent tank of your 6922 and attach the black spray tip to your wand. The pressure washer's siphon action will add a bit of the detergent to the water stream at low pressure and dilute it properly- usually about 1:10 (1 gallon of concentrate makes 10 gallons of cleaner).

We have a video on How To Pressure Washer Your House that will have some useful tips.

Mildew is tougher to clean than grime and grit- it's a living organism that puts roots down into the surface. Green mold and grime usually clean right off, even on rough cedar- but mildew may take some extra steps. Here's a video with some Removing Mildew From Your Siding basics.

If the mildew has had a while to develop and has stained the surface, more power may not be the answer since you don't want to damage the surface. Using a strong mildew cleaner like bleach, TSP or Jomax will ruin the seals on your pump, so you may want to try applying the cleaner by hand and using the pressure washer to rinse it off, or trying a Foamer that introduces the chemical after your pump. Please protect your eyes and body, your landscaping, pets and kids when using these products, especially on breezy days.
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