MuscleGloss is happy to announce the release of MuscleStop— a must use primer for all oil and grease saturated surfaces. Our contractors often run into situations where there are oil or grease stains in the concrete and they need a proper solution to treat those areas. MuscleStop is that solution! It penetrates deeply into the surface to lock up contamination for the long term, leaving a clean surface perfect for patching and sealing. MuscleStop is compatible with all petroleum based oils and greases and prevents delamination of epoxy coatings and sealers.