Stand Off ® Oil and Grease Stain Remover is a poultice cleaner for pulling stubborn oil and grease stains out of pavers, concrete, stone and other porous surfaces. Just pour Oil & Grease Stain Remover on the embedded stain. It spreads out to make an instant poultice – no mixing, troweling, plastic covering or tape needed. As the poultice dries, it pulls the contaminants out of the substrate, capturing them in its highly absorbent blend of batter-thick surfactants, solvents and powders. After a 5–8 hour dwell, simply sweep up the dried poultice and its absorbed contaminants for easy disposal.