--- product_id: 263856076 title: "BLUE BEAR 500MR Mastic Remover for Concrete Surfaces Gallon" brand: "blue bear" price: "1398.29 DT" currency: TND in_stock: true reviews_count: 5 category: "Blue Bear" url: https://www.desertcart.tn/products/263856076-blue-bear-500mr-mastic-remover-for-concrete-surfaces-gallon store_origin: TN region: Tunisia --- # 100% American Grown Soybeans base Virtually no odor for safe indoor use USPS-approved asbestos mastic removal BLUE BEAR 500MR Mastic Remover for Concrete Surfaces Gallon **Brand:** blue bear **Price:** 1398.29 DT **Availability:** βœ… In Stock ## Summary > 🌿 Clean green, work mean: The future of mastic removal is here! ## Quick Answers - **What is this?** BLUE BEAR 500MR Mastic Remover for Concrete Surfaces Gallon by blue bear - **How much does it cost?** 1398.29 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/263856076-blue-bear-500mr-mastic-remover-for-concrete-surfaces-gallon) ## Best For - blue bear enthusiasts ## Why This Product - Trusted blue bear brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Odorless Operation:** Work comfortably in occupied spaces without harsh chemical smells disrupting your workflow. - β€’ **Certified Safety First:** The only remover passing USPS tests for asbestos-containing masticβ€”trusted in sensitive environments. - β€’ **Time-Saving Efficiency:** Removes adhesives up to 50+ years old faster than traditional hazardous chemicals. - β€’ **Eco-Powered Performance:** Harness the natural strength of soybeans for powerful, green mastic removal. - β€’ **Versatile Surface Compatibility:** Effectively strips vinyl, ceramic, carpet adhesives, and black mastic with ease. ## Overview BLUE BEAR 500MR is a professional-grade, odorless mastic remover made from 100% American-grown soybeans. It’s uniquely certified by USPS for safe asbestos-containing mastic removal, making it ideal for occupied public spaces like schools and hospitals. This gallon-sized powerhouse efficiently dissolves decades-old adhesives including vinyl, ceramic, and carpet mastics, delivering faster, safer restoration without harsh chemical fumes. ## Description Ideal for use in occupied areas like post offices, schools, hospitals and other public places where safety is important. 500MR removes newer mastics, layered adhesives and even glues 50+ years old, using the power of soybeans. It's the first product to pass both performance and environmental safety test by the USPS for the removal of mastic containing asbestos! Contractors find that 500MR works more efficiently, saves time, and helps create a safer restoration site compared to traditional hazardous chemical mastic removers. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. Review: This mastic remover worked great when I did it correctly... - PROJECT: 58 year old black asbestos mastic under cracked, beat up, loose asbestos tile. WHAT I USED FOR THE MASTIC REMOVAL: - Blue Bear 500MR - Concrete degreaser from Rust-Oleum - Rubber disposable gloves - Cheap squeegee you can throw away - Cheap scrub brush you can throw away - Disposable shoe covers - Kitty litter - Metal dust pan - Lots of those strong blue shop paper towels. (Not the kitchen paper towels) SHORT STORY First Attempt: 2 hour soak time Result: .....Kinda worked, but not really. - Lots of water was still on the floor and my patience was wearing thin after I got the tile up, so I didn't spread the 500MR as well as I should have. - The added water from my tile removal diluted the 500MR so it wasn't close to it's full strength. Second Attempt: 12 hour soak time Result: Mastic Gone! - After cleaning up my first attempt, I reapplied the 500MR and very evenly coated the floor. - Let it sit overnight - Some scrubbing, kitty litter, and a couple rounds of degreaser gave us a mastic free floor! LONG STORY: Background: We just bought a house from 1960 and it has asbestos tile running throughout (tested). Not a big deal as we would just be covering it up with other flooring anyway. However the popcorn ceiling in the master and the compromised tile in the laundry room would not be a simple "cover it up and forget it" type of solution. We had the popcorn ceiling professionally removed and I went to work on the tile. After watching video after video about different ways to remove this black death tar adhesive, I finally decided to give the Blue Bear 500MR the starting position. It was a little spendy, but I liked the idea that it was biodegradable and their videos made it look so darn easy. Prep: After putting on my hazmat suit, gloves, goggles, respirator, and telling my wife I loved her, just in case I didn't make it out alive, I stepped into the plastic and duct tape sealed room, armed with a spray bottle, hand tools, and the 500MR. After two hours of spraying water, tile scraping, and muffled swearing into my respirator, the tile was removed and it was time for the 500MR to step up to the plate. Performance: At this point I was so frustrated with the tile that I didn't give the 500MR a setup that would lead to it's success. The floor was still soaking wet with all the water and I was about to burn the newly purchased home to the ground. I poured a little less than half the 500MR on the floor, spread it around (sort of), and got out of my astronaut costume so I could get into the makeshift decontamination shower. We went back to our apartment, had dinner, and I returned two hours later. The mastic remover did the best it could with my sloppy set up. All the water that I left on the floor diluted the 500MR so it lost some of its strength and my spreading job was lazy at best. After using kitty litter to clean up all the water and 500MR, I gave the 500MR the second chance it deserved. I reapplied the 500MR using mostly my hand in a rubber glove to very evenly spread it over every square inch of the cleaned up floor. I then left it over night and returned the next morning to a floor that was easily broken free of it's black mastic tomb with a scrub brush and some more kitty litter. A couple rounds of degreaser and the floor is sans mastic! Conclusion: What I thought was going to be the easy part, taking off the tile, ended up being the bane of my existence. And what I thought was going to be the hardest part of the job, removing the black mastic, was made extremely easy by the Blue Bear 500MR (as soon as I actually took the time to do it correctly). Things I learned that might help you: - Don't let the 500MR get diluted with water. It doesn't work as well. Just squeegee up the water before applying. It doesn't need to be dry (and shouldn't be dry if your dealing with asbestos), just free of standing water. - Kitty litter is awesome. Worked way better for me to make a little pile of litter and squeegee the 500MR/mastic soup toward the pile instead of spreading the litter around everywhere. Kitty litter gets pasty and not easy to push around when it starts soaking everything up. - Give it time. I was nervous that the 500MR would dry out if left too long on the floor. It didn't. This has a constancy something close to olive oil so I'm sure the longer it sits the more it soaks into the concrete. This will result in very easy mastic removal, but also more time spent with the degreaser and the concrete possibly being stained. So use your judgement to get a good balance of what's important to you. We are laying new flooring over the laundry room so we didn't care if the concrete was stained. - Wear shoe covers. The shoe covers will get soaked with oil/degreaser and will not protect your shoes from getting oily and tracking it everywhere, but they WILL prevent the tread of your shoes from getting CAKED with kitty litter paste which is not fun to remove. They are also cheap, easy to take off, throw away in your mastic trash bag, and swap with each stage of the process. - You will use so many paper towels. Get the good, thick, blue shop paper towels. Normal kitchen paper towels won't work. (Sorry Bounty) I hope this helps anyone with the mastic removal process. And please don't remove/mess with anything containing asbestos unless you are confident you can do it safely, responsibly, and dispose of it according to your local Department of Environmental Quality code. It's not worth the risk. That being said... This stuff is awesome. Review: Worked fantastic for pressure sensitive adhesives - This stuff worked like a charm! I had about 1200 sq ft area in one end of my shop that had been a temporary apartment while we built the house. After we had the house built, I remodeled the apartment area to keep just one room and the bathroom. The remainder went back to the shop. But, I had used the peel-and-stick carpet tiles and after removing them, there was a lot of adhesive remaining on the concrete. I want to paint the floor, so the adhesive had to go (besides, it was sticky and a pain to walk on). I tried the floor adhesive remover sold at Home Depot and Lowes both (two different brands). All they did was make a mess. I did some research, and apparently most carpet tile (and probably other floor tiles as well) use a pressure sensitive adhesive that is totally different from regular floor mastic. This was one of 4 products that I found in researching that would break down the pressure sensitive adhesives. I applied it with a acid brush and let it stand 4 hours. Then scraped the floor. The adhesive came up easily. after scraping all the adhesive out, I had an old Hoover floor-mate that I used to clean up the rest of the floor. After it dried, there was not a spot of adhesive anywhere. I did a little touch-up scraping around the corners and around the door, and the floor was clean as a whistle, ready to etch and paint. Be aware however, that if you use a floor scrubber/shampooer after scraping, the adhesive will still be in the stripper and it will dissolve in the water. Clean up of the machine can be a bit involved. In my case, I had an old machine that was on its last legs anyway, and as soon as I finish the shop I'm going to trash it. A mop and bucket would probably work too, but it would have been a bit more work. ## Features - Formerly known as BEAN-e-doo Mastic Remover - Removes asbestos/black mastic, vinyl glue, ceramic mastic, traditional carpet adhesives - Virtually No Odor - Made with 100% American Grown Soybeans - NOTE: Due to regulations and restrictions of the item's volume exceeding 1 gallon or more, the item cannot be shipped to the state of California. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00U2RCK2C | | Brand | Blue Bear | | Brand Name | Blue Bear | | Contains Liquid Contents? | Yes | | Customer Reviews | 4.2 out of 5 stars 532 Reviews | | Item Form | Liquid | | Item Volume | 1 Liters | | Item form | Liquid | | Item volume | 1 Liters | | Manufacturer | Franmar | | Material Features | Plant Based | | Material features | Plant Based | | Model Number | BBIM11G | | Number of Items | 1 | | Part Number | BBIM11G | | Scent | Unscented | | Size | 128 Fl Oz (Pack of 1) | | Special Features | Odorless | | Specific Uses For Product | Carpet | | Specific uses for product | Carpet | | Surface Recommendation | Carpet,Ceramic,Concrete | | UPC | 040926761289 | ## Product Details - **Brand:** Blue Bear - **Item form:** Liquid - **Scent:** Unscented - **Specific uses for product:** Carpet - **Material features:** Plant Based ## Images ![BLUE BEAR 500MR Mastic Remover for Concrete Surfaces Gallon - Image 1](https://m.media-amazon.com/images/I/71Lc2ENBzbL.jpg) ![BLUE BEAR 500MR Mastic Remover for Concrete Surfaces Gallon - Image 2](https://m.media-amazon.com/images/I/815VCuT0SOL.jpg) ![BLUE BEAR 500MR Mastic Remover for Concrete Surfaces Gallon - Image 3](https://m.media-amazon.com/images/I/81jlQnNii-L.jpg) ![BLUE BEAR 500MR Mastic Remover for Concrete Surfaces Gallon - Image 4](https://m.media-amazon.com/images/I/81hSLrouc5L.jpg) ![BLUE BEAR 500MR Mastic Remover for Concrete Surfaces Gallon - Image 5](https://m.media-amazon.com/images/I/819hSKsFumL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ This mastic remover worked great when I did it correctly... *by N***K on 13 January 2019* PROJECT: 58 year old black asbestos mastic under cracked, beat up, loose asbestos tile. WHAT I USED FOR THE MASTIC REMOVAL: - Blue Bear 500MR - Concrete degreaser from Rust-Oleum - Rubber disposable gloves - Cheap squeegee you can throw away - Cheap scrub brush you can throw away - Disposable shoe covers - Kitty litter - Metal dust pan - Lots of those strong blue shop paper towels. (Not the kitchen paper towels) SHORT STORY First Attempt: 2 hour soak time Result: .....Kinda worked, but not really. - Lots of water was still on the floor and my patience was wearing thin after I got the tile up, so I didn't spread the 500MR as well as I should have. - The added water from my tile removal diluted the 500MR so it wasn't close to it's full strength. Second Attempt: 12 hour soak time Result: Mastic Gone! - After cleaning up my first attempt, I reapplied the 500MR and very evenly coated the floor. - Let it sit overnight - Some scrubbing, kitty litter, and a couple rounds of degreaser gave us a mastic free floor! LONG STORY: Background: We just bought a house from 1960 and it has asbestos tile running throughout (tested). Not a big deal as we would just be covering it up with other flooring anyway. However the popcorn ceiling in the master and the compromised tile in the laundry room would not be a simple "cover it up and forget it" type of solution. We had the popcorn ceiling professionally removed and I went to work on the tile. After watching video after video about different ways to remove this black death tar adhesive, I finally decided to give the Blue Bear 500MR the starting position. It was a little spendy, but I liked the idea that it was biodegradable and their videos made it look so darn easy. Prep: After putting on my hazmat suit, gloves, goggles, respirator, and telling my wife I loved her, just in case I didn't make it out alive, I stepped into the plastic and duct tape sealed room, armed with a spray bottle, hand tools, and the 500MR. After two hours of spraying water, tile scraping, and muffled swearing into my respirator, the tile was removed and it was time for the 500MR to step up to the plate. Performance: At this point I was so frustrated with the tile that I didn't give the 500MR a setup that would lead to it's success. The floor was still soaking wet with all the water and I was about to burn the newly purchased home to the ground. I poured a little less than half the 500MR on the floor, spread it around (sort of), and got out of my astronaut costume so I could get into the makeshift decontamination shower. We went back to our apartment, had dinner, and I returned two hours later. The mastic remover did the best it could with my sloppy set up. All the water that I left on the floor diluted the 500MR so it lost some of its strength and my spreading job was lazy at best. After using kitty litter to clean up all the water and 500MR, I gave the 500MR the second chance it deserved. I reapplied the 500MR using mostly my hand in a rubber glove to very evenly spread it over every square inch of the cleaned up floor. I then left it over night and returned the next morning to a floor that was easily broken free of it's black mastic tomb with a scrub brush and some more kitty litter. A couple rounds of degreaser and the floor is sans mastic! Conclusion: What I thought was going to be the easy part, taking off the tile, ended up being the bane of my existence. And what I thought was going to be the hardest part of the job, removing the black mastic, was made extremely easy by the Blue Bear 500MR (as soon as I actually took the time to do it correctly). Things I learned that might help you: - Don't let the 500MR get diluted with water. It doesn't work as well. Just squeegee up the water before applying. It doesn't need to be dry (and shouldn't be dry if your dealing with asbestos), just free of standing water. - Kitty litter is awesome. Worked way better for me to make a little pile of litter and squeegee the 500MR/mastic soup toward the pile instead of spreading the litter around everywhere. Kitty litter gets pasty and not easy to push around when it starts soaking everything up. - Give it time. I was nervous that the 500MR would dry out if left too long on the floor. It didn't. This has a constancy something close to olive oil so I'm sure the longer it sits the more it soaks into the concrete. This will result in very easy mastic removal, but also more time spent with the degreaser and the concrete possibly being stained. So use your judgement to get a good balance of what's important to you. We are laying new flooring over the laundry room so we didn't care if the concrete was stained. - Wear shoe covers. The shoe covers will get soaked with oil/degreaser and will not protect your shoes from getting oily and tracking it everywhere, but they WILL prevent the tread of your shoes from getting CAKED with kitty litter paste which is not fun to remove. They are also cheap, easy to take off, throw away in your mastic trash bag, and swap with each stage of the process. - You will use so many paper towels. Get the good, thick, blue shop paper towels. Normal kitchen paper towels won't work. (Sorry Bounty) I hope this helps anyone with the mastic removal process. And please don't remove/mess with anything containing asbestos unless you are confident you can do it safely, responsibly, and dispose of it according to your local Department of Environmental Quality code. It's not worth the risk. That being said... This stuff is awesome. ### ⭐⭐⭐⭐⭐ Worked fantastic for pressure sensitive adhesives *by D***N on 16 February 2026* This stuff worked like a charm! I had about 1200 sq ft area in one end of my shop that had been a temporary apartment while we built the house. After we had the house built, I remodeled the apartment area to keep just one room and the bathroom. The remainder went back to the shop. But, I had used the peel-and-stick carpet tiles and after removing them, there was a lot of adhesive remaining on the concrete. I want to paint the floor, so the adhesive had to go (besides, it was sticky and a pain to walk on). I tried the floor adhesive remover sold at Home Depot and Lowes both (two different brands). All they did was make a mess. I did some research, and apparently most carpet tile (and probably other floor tiles as well) use a pressure sensitive adhesive that is totally different from regular floor mastic. This was one of 4 products that I found in researching that would break down the pressure sensitive adhesives. I applied it with a acid brush and let it stand 4 hours. Then scraped the floor. The adhesive came up easily. after scraping all the adhesive out, I had an old Hoover floor-mate that I used to clean up the rest of the floor. After it dried, there was not a spot of adhesive anywhere. I did a little touch-up scraping around the corners and around the door, and the floor was clean as a whistle, ready to etch and paint. Be aware however, that if you use a floor scrubber/shampooer after scraping, the adhesive will still be in the stripper and it will dissolve in the water. Clean up of the machine can be a bit involved. In my case, I had an old machine that was on its last legs anyway, and as soon as I finish the shop I'm going to trash it. A mop and bucket would probably work too, but it would have been a bit more work. ### ⭐⭐⭐⭐⭐ It works great on late50s early 60s black mastic under vinyl tiles. *by M***D on 20 February 2022* I had a 4.5'x17' section of concrete in my basement where old vinyl tiles had been removed. I'm getting ready to epoxy my basement and I needed to prep the area. I didn't feel like wasting money testing for asbestos so I went on the assumption that this mastic does contain it. I didn't want to grind on it and send asbestos dust through my shop vac, which might get sent airborne. I bought 1 gallon of 500MR to start with. I poured about 1 to 1 1/2 cups of it onto a section of the floor and used a small squeegee to spread it around to cover a 3'x3' section. About 45 minutes later, I used the squeegee to test the effectiveness. I was pleasantly surprised to find that all but the thickest patches had completely dissolved. I used the squeegee to move the puddle to a new 2'x3' section. About 45 minutes later, I had the same result so I squeegeed the puddle to a new 1'x3'section. After another 45 minutes, I used some old shirts to absorb the mess and wipe off the floor. That small amount of 500MR removed 90% of the mastic from a 6'x3' section for me. I repeated this a couple of times and got the entire area 90-95% free of mastic and I still had just under 1/2 gallon of 500MR left. I used some Mr. Clean in a bucket of water and scrubbed the floor down and then wiped it dry. The next day, I poured the remaining 500MR on the area and let it soak for 45 minutes. I used a wire brush to loosen any remaining stubborn spots and then wiped up the mess, scrubbed, and washed again. I'm not sure if I used the best process, but it worked very well for me and I got rid of some old worn out clothes that I don't wear anymore. There are small traces of mastic in the pits and grooves of the concrete, and the area still has a brownish tint to it, but I do feel much better about grinding on it now. You will need to clean the floor after using this. It leaves a slippery, oily residue behind that you will want to get rid of. Mr. Clean and plenty of water seems to have done the job pretty well, so I don't think I would recommend spending a lot of money on expensive cleaners. If I was not planning on grinding it, I would give it one more cleaning using laundry detergent in a bucket of water and I am sure it would be fine for anything you might want to do. For the old, brown/black mastic under those old 9"x9" vinyl tiles, 500MR is your product. It works as advertised. I would absolutely recommend to a friend. Better yet, I would tell someone I didn't like NOT to use it so they work their butt off using an inferior product. ;) Per the big, bold warning on the package, DO NOT USE ON WOOD. It will soak into the wood and you will probably not be able to coat it or stain it when you are done. ## Frequently Bought Together - Blue Bear 500MR Mastic Remover For Concrete Surfaces Gallon - BLUE BEAR 700DG Degreaser Gallon - ABN Floor Razor Scraper, 8in – Heavy-Duty Adjustable Handle – Demolition, Flooring Removal Razor Blade Scraper --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/263856076-blue-bear-500mr-mastic-remover-for-concrete-surfaces-gallon](https://www.desertcart.tn/products/263856076-blue-bear-500mr-mastic-remover-for-concrete-surfaces-gallon) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-05-23*