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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Multipurpose Detergent, 1 Gallon

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 USA

🧼Universal pressure washer compatibility

€ 147.32

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Description

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

ECO CONSCIOUS FORMULA - Eco-friendly ingredients crafted in the USA, so you clean with confidence and care for the planet.
POWERFUL CONCENTRATION - One gallon makes up to 40 gallons of ready-to-use detergent—maximize your cleaning power and value.
SEAMLESS COMPATIBILITY - Works flawlessly with KÄRCHER and most gas & electric pressure washers for effortless cleaning.
FAST FLAWLESS RESULTS - Cuts through grime quickly without streaks or residue—get professional-grade shine in less time.
VERSATILE CLEANING MASTER - Perfect for patios, driveways, cars, boats, fences, and more—your all-in-one outdoor cleaning solution.

KÄRCHER Multi Purpose Pressure Washer Detergent is a highly concentrated, eco-friendly cleaning solution made in the USA. Compatible with most consumer gas and electric pressure washers, it delivers professional-grade results across a wide range of surfaces—from driveways to boats—while making up to 40 gallons of detergent from a single gallon concentrate.

Specifications

ASIN	B01BMB4C86
ASIN	B01BMB4C86
Best Sellers Rank	#5,612 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #30 in Pressure Washer Accessories
Brand Name	KÄRCHER
Customer Reviews	4.4 4.4 out of 5 stars (5,359)
Date First Available	February 10, 2016
Department	Unisex Adult
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
Item model number	9.558-144.0
Manufacturer	Karcher
Manufacturer	Karcher
Material Features	Eco-Friendly
Model Number	9.558-144.0
Number of Items	1
Part Number	9.558-144.0
Product Dimensions	7.25 x 11 x 4 inches; 8.25 pounds
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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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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€ 147.32

Duties & taxes included

In stock

Sold byAmazon FinlandDelivered 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 Finland.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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