Surface preparation is a critical step in any quality painting project. Dupli-Color(R) simplifies your painting preparation needs by offering a complete line of Grease & Wax removers, including: Prep-Wipe, Prep-Spray, and Grease & Wax Remover in bulk gallon and quart containers. Each product removes dirt, road tar, grease, wax and oil from any surface without leaving a film residue.