▪ Interior/Exterior ▪ 2 In 1 Cleaner And Etcher ▪ Designed To Clean And Etch Bare Concrete And Masonry Surfaces ▪ Removes Grease, Oil, Auto Fluids, Rust And Red Clay Stains From Any Concrete And Masonry Surface ▪ Ideal For Use On Uncoated Surfaces Such As: Garage Floors, Driveways, Walkways, Patios, Basement Floors And Walls, Pool Decks, Concrete, Brick, Stone And Exposed Aggregate ▪ Biodegradable ▪ Easy Water Clean Up ▪ Mfg #99101NC