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KRUD KUTTER MR08 The Must For Rust, 8-Ounce

4.4 4.4 out of 5 stars 507 ratings

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About this item

  • Water based, non-toxic, biodegradable, non-flammable and xylene-free
  • Safe for use at home and work
  • From the most trusted name in serious, non-solvent cleaning Krud Kutter
  • Super concentrated, ready to use formula
  • This item is not for sale in Catalina Island
See more product details

Customer ratings by feature

Easy to use
4.7 4.7
Value for money
4.5 4.5

From the manufacturer

krud kutter heavy duty cleaner household degreaser and cleanser

Better Products for a Faster, More Thorough Clean

Krud Kutter delivers the most comprehensive assortment of powerful cleaning solutions formulated so you can live better and clean less. That’s because Krud Kutter’s formulas are your ally in the fight against krud.

Whether it's removing stubborn stains from fabrics, cleaning baked on greasy messes in the kitchen, or clearing grime from outdoor surfaces, Krud Kutter offers a wide range of solutions to keep homes healthy and looking their best.

There's a Krud Kutter for every household need - Kut the Krud both indoors and out!

Krud Kutter Home Perfect for Cleaning Nearly Any Household Stain or Surface

Tough on Krud, Better for You

Whenever possible, the Krud Kutter family of products deliver unmatched cleaning results while maintaining a focus on environmental responsibility.

Krud Kutter Original Cleaner Degreaser Concentrate Spray Bottle Krud Kutter The Must for Rust Corrosion Remover and Inhibitor Cleaner Krud Kutter Mold and Mildew Stain Remover Bathroom and Kitchen Cleaner Krud Kutter Multi-Purpose Power Wash Concentrate Outdoor Cleaning Formula Krud Kutter Heavy Duty Bleach Free Disinfectant Cleaner Spray Krud Kutter Adhesive Gunk Goo and Glue Remover Cleaner Spray
Original Concentrated Cleaner/Degreaser Rust Remover & Inhibitor Mold & Mildew Stain Remover Multi-Purpose Power Washer Concentrate Heavy Duty Cleaner & Disinfectant Adhesive Remover
Customer Reviews
4.4 out of 5 stars
2,569
4.4 out of 5 stars
507
4.1 out of 5 stars
231
4.1 out of 5 stars
129
4.4 out of 5 stars
262
4.0 out of 5 stars
119
Recommended Use: Wide range of tough, greasy messes and stains, both indoors and out Rusted/oxidized metal surfaces or metal in need of protection Indoor and outdoor items with deep set mold or mildew staining or that need cleaning/ protection Nearly all outdoor home surfaces with grime, oil, sap, mildew and more Hard non-porous surfaces Most glues and adhesives including carpet seam sealer and mastic

Product information

Technical Details

Additional Information

Warranty & Support

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KRUD KUTTER MR08 The Must For Rust, 8-Ounce


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Product Description

Product Description

Designed to remove rust from metal objects. For best results, soak rusty items in Must For Rust. Make sure all oil and grease is removed. Works great on rusty tools, hinges, nuts and bolts. Must for Rust will etch the surface and protect from flash rust. After drying one hour, prime and paint. Water-based. Non-flammable. Biodegradable.

From the Manufacturer

America's Favorite Rust Remover, The Must for Rust removes & prevents rust in one step! The proprietary formulation penetrates every void of a metal surface and dissolves rust/oxidation through chemical action. Then tiny, rust-inhibiting crystals are formed and become integral with the surface molecules of the metal to resist future rusting. The corrosive agents attach these crystals instead of the metal. Once completely dry, the surface is ready for the nest step, whether it be painting, welding, plating, lubrication, etc. Or simply leave the surface bare, and the crystals will inhibit future rust formation. Krud Kutter's Must For Rust is ideal for painting. When dry, the Must For Rust accepts any primer, paint, coasting, etc, and provides a clean surface free of contaminants, which allow a secure bond for coating. When chips or breaks appear in the coating the surface underneath will limit the rust to the break. That means that rust won't spread under the coating and maintenance thought up will be quick and easy. Easy to Apply with spray, brush or dip. Rid Rust with Must for Rust.

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Details
Added to Cart
Details
Added to Cart
Details
Added to Cart
PriceCurrently unavailable.-36% $6.98
List:$10.99
$7.88$8.97
Delivery
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Customer Ratings
Easy to use
4.7
4.7
4.3
4.7
Value for money
4.5
4.3
4.0
4.4
Adhesion
4.6
4.3
4.6
Durability
4.4
3.3
4.6
Sheerness
4.4
4.3
Sold By
Amazon.com
Amazon.com
Amazon.com
volume
8 fluid ounces
10.25 nanoliters
340 milliliters
300 milliliters
unit count
8
10.25
12
10.25
paint type
Watercolor
Spray
Spray
Enamel,Oil
surface suggestion
Metal
Metal
Fiberglass,Metal,Wood
exterior finish
Metal
Flat finish
Metal
full cure time
1 hours hours
24 hours hours
24 hours hours

Customer reviews

4.4 out of 5 stars
4.4 out of 5
507 global ratings

Customers say

Customers like the quality, ease of use, and rust removal of the paint. For example, they say it's a good product, works great on rust, and is very easy to use. Customers are also impresseded with the cleaning power, saying it performs cleaning wonders. That said, opinions are mixed on the performance.

AI-generated from the text of customer reviews

35 customers mention30 positive5 negative

Customers like the rust removal of the paint. They say it takes out the rus nicely, works great on rust, and cleans up tools and tops on table saws. Some reviewers also mention that the reinstallation went smoothly, and so far no rust has broken through.

"...After using this stuff, the rust was completely gone, and the metal was smooth and completely usable, but it was black...." Read more

"...All the rust on the threads were gone and the reinstallation went smoothly." Read more

"the bottle says it keeps bare metal rust free for uo to 12mos , I did not find that to be true , but im willing to give it A second chance , maybe I..." Read more

"...in the past several years still look great and so far no rust has broken through ." Read more

6 customers mention6 positive0 negative

Customers find the paint easy to use. They mention that it's not time consuming, and the clean up was also easy. Customers also say that the reinstallation went smoothly.

"Very easy to use, but depending on the size of item you may need more than one small bottle...." Read more

"...All the rust on the threads were gone and the reinstallation went smoothly." Read more

"...Still look better than before . Very easy to use . Not time consuming." Read more

"...gone....wish this was a larger size..will definately buy again...so eay to use..and clean up was also easy." Read more

6 customers mention6 positive0 negative

Customers are satisfied with the quality of the paint. They mention that it works well, has no complaints, and is mild.

"Good product" Read more

"It's mild but DON'T OVERNIGHT SOAK! Follow the directions!" Read more

"It works. No complaints." Read more

"great product." Read more

5 customers mention5 positive0 negative

Customers are satisfied with the cleaning capabilities of the paint. They mention that it performs cleaning wonders, cleaning tools and steel like no one's business.

"Cleans up steel like no one’s business.Test a drop or two on anything valuable though...." Read more

"This stuff works great on rust. Cleaned up some tools and top on my table saw. Looks like new." Read more

"Over the years this product has performed cleaning wonders for me." Read more

"...a larger size..will definately buy again...so eay to use..and clean up was also easy." Read more

39 customers mention27 positive12 negative

Customers are mixed about the performance of the paint. Some mention it works well, while others say it doesn't work as well as they hoped.

"...the rust was completely gone, and the metal was smooth and completely usable, but it was black...." Read more

"...Very happy with the results - I wasn't expecting a lot but this stuff really does work!..." Read more

"Not as good as I hoped but still works with a few tries." Read more

"...First job: astonishing results. Very rusty 60-year old tool looks virtually new...." Read more

5 customers mention0 positive5 negative

Customers dislike the smell of the paint.

"Seems to work, but smells terrible. It kind of just lifts the rust off the metal and then you can wipe it away...." Read more

"...It is like some strong chemical acid with non pleasant smell as well." Read more

"...handful of small restoration projects and it works great, but the smell is.. Weird! I haven't used any other product, but I don't think I need to...." Read more

"...This does smell horrible though..." Read more

Removes rust, but blackens steel
5 Stars
Removes rust, but blackens steel
Very easy to use, but depending on the size of item you may need more than one small bottle. Place the object that you need to clean up in a glass or plastic container that has walls higher than the rusted areas of the object. Pour Krud Kutter over the object so that the rusted areas are coated/covered. Keep the rusted areas wet for about 30 minutes. Rinse with water. I had a couple of steel cement trowels that had accumulated some corrosion. After using this stuff, the rust was completely gone, and the metal was smooth and completely usable, but it was black.Don't expect this stuff to leave your steel shiny and silver. To dispose of the used liquid, place it into a bottle or jar, put a lid on it, and take it to a local hazardous waste acceptance site.
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Top reviews from the United States

Reviewed in the United States on November 14, 2021
Customer image
5.0 out of 5 stars Removes rust, but blackens steel
Reviewed in the United States on November 14, 2021
Very easy to use, but depending on the size of item you may need more than one small bottle. Place the object that you need to clean up in a glass or plastic container that has walls higher than the rusted areas of the object. Pour Krud Kutter over the object so that the rusted areas are coated/covered. Keep the rusted areas wet for about 30 minutes. Rinse with water. I had a couple of steel cement trowels that had accumulated some corrosion. After using this stuff, the rust was completely gone, and the metal was smooth and completely usable, but it was black.
Don't expect this stuff to leave your steel shiny and silver. To dispose of the used liquid, place it into a bottle or jar, put a lid on it, and take it to a local hazardous waste acceptance site.
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One person found this helpful
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Reviewed in the United States on August 17, 2019
3 people found this helpful
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Reviewed in the United States on May 5, 2014
4 people found this helpful
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Reviewed in the United States on April 24, 2022
Reviewed in the United States on December 13, 2012
Reviewed in the United States on September 2, 2022
Reviewed in the United States on March 6, 2021
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5.0 out of 5 stars GREAT STUFF!!!!!
Reviewed in the United States on March 6, 2021
My pictures speak for themselves!
Its a motorcycle tank that sat untouched for 5 Years with some gas in it.

Pic 1 was After 4 GALLONS of CLR over 4 days!
1 gallon for 1 day, drain, 1 gallon for another day, drain, then 2 gallons for 2 days.
It only took the very Light rust away.

Pic 2 was after like 36 hours of Six 8oz bottles of Krud Kutter.
Was good enough to drain sooner, but I had to wait for a new petcock to arrive.
As after draining & flushing it, I had to fill it with gas to avoid flash rusting.
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Reviewed in the United States on February 12, 2019
One person found this helpful
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