Lifeguard Concrete Cleaner & Degreaser is a heavy duty cleaner formulated to remove embedded grease and oil staining from concrete. Lifeguard Concrete Cleaner & Degreaser is designed for maintenance of high foot and vehicle traffic areas. It may be used full strength for severe oil build-up or with up to 5 parts water. Lifeguard Concrete Cleaner & Degreaser will brighten most concrete and aggregate surfaces.