Chomp Pull It Out Concrete Stain Remover. This professional strength concrete stain remover provides exceptional oil and grease lifting from porous surfaces. Chomp Pull It Out! Concrete Stain Remover is powerful cleaning that begins on contact and helps address problem spills and maintain the appearances and value of home, garage and driveway. It is an effective stain removal for masonry surfaces and wood, composite and pavers, and more. This product is biodegradable and easy to use. Just pour on stain, let dry, and sweep away.