Customer Reviews for KLEEN KRETE 32 oz. Multipurpose Concrete Remover and Dissolver Spray Bottle

I applied the solution numerous times. Let it sit for 30 minutes and tried an overnight application

It did work on the vinyl siding pretty good but you have to be really careful with and drips as it will etch the things you don't want it to.

Does a nice job on heavier deposits...does not work on heat resistant concrete (that stuff is really tough...clean tools as you go). Make sure the room is well ventilated.

Excellent product. Accomplished exactly what I wanted it to do.

This was ONLY product out of 5 I tried that worked to actually dissolve new concrete splattered onto house siding. Two things, however, cause me to rate it Good (4 stars) and not quite Excellent (5 stars). Note, by the time I tried Kleen Krete the splattered concrete had been on the siding for 7 days. 1. You must allow the spray to remain on the siding "concrete spots" for at least 20 minutes before scraping (be careful not to scratch the siding paint) or using a hard bristle brush. 2. I had to apply Kleen Krete 5 times over several days to get 99% of the spots off the siding. Each time required fairly hard brushing. 3. Directions should recommend using a plastic tarp on the new concrete that was recently poured under where you are spraying Keen Krete. The dissolved concrete becomes a white liquid for a short time that can drop a white stain on your new concrete. Strong soap, water and hard brushing gets rid of the white.

It did not work at all. Made no difference for what I wanted it to do.

Rating provided by a verified purchaser

It worked well on small patches of dry concrete but not on anything larger than the size of a quarter.

Our vehicle had dried on concrete down the passenger side from a highway project during a trip in 2016 and i have tried every imaginable internet hack to remove it. Finally, four years later, i through all caution to the wind and used the Kleen Krete product which stated it could be used "safely" on a vehicle. I tried the 30 minute application but only had marginal success. The overnight application worked amazing and using my power washer i removed 99% of the concrete. A few spots were left that required another application. There was no damage to the finish and after applying a wax finish it looks like it is brand new. Thanks Kleen Krete for a product that works.

This product actually worked. I sprayed on the hard cement that I couldn't remove, left on for several hours (only because I forgot about it). Used a scraper and the cement came off, it had softened. Really good product!

Rating provided by a verified purchaser

This product doesn’t work to take off the cement of vehicles.

Product meets expectations and works as advertised. I used to remove concrete slurry on exterior of both right side doors of my truck. Removed the concrete without paint damage.

Barely did anything. Would not recommend

Rating provided by a verified purchaser

Rating provided by a verified purchaser

no, this product is not helping me in anyway.

Followed instructions and still have cement specks on car

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Our contractor spilled concrete on our new stone pavers while installing wooden posts for a patio cover. He cleaned what he could but it wasnt enough for Hubby.. I found this product after reading several reviews and it did not disappoint. We sprayed on left for 30 mins and scrubbed with a brush after the first rinse it had removed alot of the spilled concrete! We are impressed!

This product took off very small splashes of concrete but didn’t really work on the big splashes.

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Unfortunately, this product did not come close to doing what we had hoped - removing concrete/stucco splatters from glass. Further, now we have a very large container of product to properly dispose of. Oh well. Life still is good . . .

Excellent product. Effectively removed dried cement on pavers

Was able to remove all the dried stucco splatter from my windows. Some spots required 2 -3 applications but they all came off.

I had high hopes, but for me it did not perform as described

Works as the label says. Will definitely use in the future to maintain all of my concrete tools because it easily causes cement to wash away from surfaces no scrubbing. Wish they carried it at my home depot store

It removed most of the concrete but not all of it.

Did not really work.