Sentinel Products, Inc. 909 Soy-Based Mastic Remover is a biodegradable, soy-based solvent cleaner created for the removal of asphalt-based mastics, adhesives, lubricants, inks and other petroleum-based residues. 909 is slow-evaporating, so it will remain active on the adhesive or residue until washed off, allowing for longer soak times, while providing you and your clients with a bio-based alternative. Clean up with Sentinel 805 Envirowash and allow floors to dry completely before installing new flooring.