Motsenbocker' Lift Off Spray Paint and Graffiti Remover is a water-based formula that was developed to be safe for the user, the environment and the surfaces that is used on. Therefore, it works differently than solvent based removers. We often recommend to have these tools along for the project because they assist with removal (to agitate to unwanted paint): clean cotton towels, scouring pads, wire brushes, and in some cases, a high pressure water system at 1,200 PSI. If you experience stubborn paint stains on porous surfaces (such as stone, concrete and brick) we recommend our gel formulation; Motsenbocker's Lift Off Paint & Varnish Remover that can be brushed on. It is great for adhering to vertical surfaces because it remains intact without running. Both products have a successful track record for being environmentally safe and effective in removing paint.