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Your cart is empty.BLUE BEAR BEANedoo 500MR Mastic Remover is a longtime favorite of contractors and remodelers. Our easy-to-use formula works on all types of mastic (even asbestos/black mastics) and carpet/tile adhesives – even if they’re decades old! Because it’s made with soybeans rather than petroleum distillates or other harsh chemicals, it’s ideal for use in schools, hospitals and other occupied areas.
diana
Reviewed in the United States on March 12, 2025
Worked really well for getting 18 year old glue off my sub floor.
gizelle
Reviewed in the United States on March 11, 2025
Worked really well, got all of the sticky stuff from all old sticky tiles
Pat Nolan
Reviewed in the United States on February 14, 2025
The Blue Bear worked, but not as good as mineral spirits on black mastic. It does work, but it's slower and less effective. Mineral spirits cost me $18 a gallon. Blue Bear costs about 4 times as much. Of course, with mineral spirits I had to wear a respirator. I ground through the vinyl first and only had the black mastic to remove, so I believe that I can compare the two fairly.
Kim Stiffler
Reviewed in the United States on June 8, 2023
Just made the glue very sticky and would not lift it.
Paul C.
Reviewed in the United States on May 15, 2022
Works like magic on old black mastic, starting to dissolve it almost immediately. After an hour the remover had spread a foot or so past where I had applied it. It is very aggressive but has little scent. It cleans up nicely with a small amount of cat litter and a stiff nylon scrub brush. I used a detergent based degreaser in a spray bottle with scrubbing and multiple rinses with water to finish the job. I finally used a light pass with a hand held concrete grinder to get a good bonding surface.It is not as effective at penetrating old vinyl adhesive. It does soften it in thin layers but it will take time and hard scraping to remove it. You definitely will need a proper scraping tool in this case.The “paper” backing of sheet vinyl thirstily soaks up the remover, however, and comes right up with some firm scraping, leaving the thin, brittle coating of adhesive behind for more intense work, as mentioned above.
Edward M. Olsoe
Reviewed in the United States on June 22, 2021
Works very well. Before starting, we attached some 0.7 mil plastic film as a protectant about 2 feet up on all the adjoining walls. Then using the spray attachment that came with the quart bottle, applied a "wet" coat to a section (about 50 sq. ft.) of the floor. We waited two hours, then poured a few pounds of Tidy Cat litter in the center and used a scraper to push the brow "goo" into the litter, which we then scooped into trash bags. The final step was mopping the floor with TSP in bucket of hot water. Since our concrete floor was not completely level/flat, we discovered that the product had dried up during the two hour "sit" time in some areas. We decided to repeat the process, but this time we resprayed the product at 10 minute intervals onto the higher areas of the floor that had a tendency to dry out. After the second attempt the floor was super clean. The process takes a while, but other than needing to use disposable nitrile gloves, the product is not too harsh or nasty to the senses (kind of a citrus aroma), it didn't require too much labor to use. Highly recommended for 60+ year old black mastic adhesive on concrete floors.
At Home in My Head
Reviewed in the United States on January 15, 2021
ADDENDUM: I have since tried using it on larger patches of the yellow mastic. And, at least in my house, the yellow mastic is impervious to Blue Bear. I have a metal floor scraper, and it's brutal trying to get this stuff up, even after soaking it in BB for 4 hours. The Black, it did really well. Even when it needed a few passes, you could see it dissolving and melting a little more each time. But this yellow, it's not even fazed by it. Like spilling water on it. I am going to do some research online to see if anyone has tips. But otherwise, my dream of concrete flooring is done, because I'm not going back to that toxic fuming stuff that I was trying before. That was not anything I ever want in my house again. And I'm not going to grind 1/2 the house with a grinder. :(I have both black and yellow mastic all over my concrete floors after I pulled up linoleum and cheap tiles. I tried a super toxic produce in the kitchen. It definitely got up a lot of the black mastic, but it was horrible with fumes, even with windows and doors open. Blue bear has a smell to it, but nothing that is a problem. I probably should be using a bucket of this stuff, but wanted to test out a small amount before buying a larger tub of it. The bottle came with a sprayer, and so I just sprayed it on the glue. Then I worked it in with a stiff bristle brush and let it sit for a few hours. Then I used a floor scraper on it. Then I put some Dawn in a bucket with water and scrubbed the floor. Then used a sponge and some rags to dry it up. Since it's a soy product, I just washed the tools up after. It's messy--the bucket has a lot of staining from the mastic glue, but I guess that's expected. Still beats toxic mess. I haven't used enough to need a cat liter clean up yet. But may try that later. It got through the mastic and I now see concrete. It still has patches that are tenacious, but I'm going to be buying the big bucket, and I'm betting that will take care of these tough patches. I would say it works as well as the really toxic strippers, but is a lot easier to work with because it isn't so toxic and hard to breathe. Just be ready to get messy.
C
Reviewed in the United States on June 23, 2019
I was amazed that this did dissolve the glue on the concrete left by peel and stick tiles and it had a nice smell and was harmless to my skin, BUT cleaning up the liquified glue was impossible..I got covered in glue and after scraping, scrubbing and cursing it is still very sticky. Might work on wood or outside where it could be power washed but in a laundry room ...well I gave up and called a floor company to lay new vinyl..so yes it works, but beware the mess.
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