Can this be used on area rugs?

Hello from Karcher - The detergents for cleaning rugs is very different than other detergents since they are designed to be vacuumed, not pressure washed.

If the pressure washer dilutes the concentrate 20 to 1, why can't the concentrate be added to the washer directly?

Hello from Karcher - as with many detergents, they are packaged as ready to use or are concentrated and must be diluted to be ready to use. To keep you from buying 20 gallons of ready-to-use detergent, the concentrated version is simpler to store but must be diluted with 20 parts water. Then you fill the pressure washer soap tank with the ready to use (diluted) detergent. The water from the pressure washer is the carrier of the detergent which makes the application of the detergent simpler than spraying a bottle of soap on the wall or car to be cleaned. Further dilution by the pressure washer is already calculated into the mix of soap and water.

Do you simply pour this into the soap dispenser of your pressure washer or do you need to dilute first?

Hello from Karcher - it is highly concentrated and needs to be diluted with 20 parts water to 1 part concentrated soap. Premix this first then pour the diluted solution into the tank. It is very difficult to premix in the tank and this affects how well the soap is applied. Besides, you can keep a premixed amount available ready to use.

Can this / will this clean asphalt shingles roofs?

Asphalt shingles can be easily damaged by a high pressure stream. If you try it be very careful.

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KÄRCHER Multi Purpose Pressure Washer Detergent, Highly Concentrated

KÄRCHER Multi Purpose Pressure Washer Detergent, Highly Concentrated

Product ID: 39835000

Details

Brand
KÄRCHER
Item Form
Liquid
Material Feature
Eco-Friendly
Scent
Fresh
Specific Uses For Product
All-Purpose &

⚡Highly concentrated formula

🌿Eco-friendly & made in the USA

🧼Universal compatibility with pressure washers

¥20347

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Description

🧽 Clean smarter, not harder—unlock the power of KÄRCHER’s concentrated clean!

VERSATILE CLEANING - From driveways to decks, cars to fences—one soap to rule them all.
ECO CONSCIOUS FORMULA - Tough on grime, gentle on the planet—clean with confidence.
POWERFUL CONCENTRATION - One gallon makes up to 40 gallons of detergent—clean more, buy less.
SEAMLESS COMPATIBILITY - Works flawlessly with KÄRCHER and most gas & electric pressure washers.
TIME SAVING EFFICIENCY - Cuts cleaning time so you can get back to what matters faster.

KÄRCHER Multi Purpose Pressure Washer Detergent is a highly concentrated, eco-friendly cleaning solution compatible with most consumer pressure washers. Made in the USA, it delivers up to 40 gallons of powerful detergent from a single gallon, designed to clean a wide range of outdoor surfaces quickly and effectively, helping busy professionals maintain pristine spaces with less effort.

Specifications

ASIN	B01BMB4C86
Best Sellers Rank	#4,211 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #21 in Pressure Washer Accessories
Brand	KÄRCHER
Brand Name	KÄRCHER
Customer Reviews	4.4 out of 5 stars 5,359 Reviews
Global Trade Identification Number	00036339581446
Included Components	Accessory
Item Form	Liquid
Item Highlight	Removes Dirt and Grime from Fences, Siding, Patios, Driveways, Sidewalks, Concrete and More, Makes up to 40 gal of Cleaner
Item Type Name	Multi-Purpose Soap
Item Volume	128 fluid ounces
Item Weight	8.3 pounds
Manufacturer	Karcher
Material Feature	Eco-Friendly
Material Features	Eco-Friendly
Model Number	9.558-144.0
Number of Items	1
Part Number	9.558-144.0
Scent	Fresh
Size	128 Fl Oz (Pack of 1)
Special Features	Concentrated, Made in the USA
Specific Uses For Product	All-Purpose Cleaning, Car Washing, Fence Cleaning, Siding Washing, Driveway Cleaning, & More
Surface Recommendation	Cars, Fences, Patio Furniture, Siding, Driveways, Heavy Equipment, & More
UPC	036339581446
Unit Count	128 Fluid Ounces

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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¥20347

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Perfect platform for hard-to-find items. Delivery was prompt.

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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