This trisodium phosphate cleaner is formulated for multiple types of extensive cleaning applications. Removes hard to clean dirt and prepares surfaces for repainting. Ideal for most residential cleaning uses. Easily remove stains caused mold or mildew from tight corners. Removes greasy, sooty dirt and prepares surface for repainting. The traditional formula, works quickly and effectively, allowing you to get the job done quickly. Rinse thoroughly after it is applied to surface. Biodegradable and noncorrosive. TSP (Tri-Sodium Phosphate) is the all-purpose cleaner used by professionals prior to painting exterior surfaces. This trisodium phosphate cleaner is formulated for multiple types of extensive cleaning applications Removes smoke and soot stains from walls. Comes as a powder that you dissolve in water to create a solution. Now Includes 1 Plastic Bucket Lid Opener (color may vary).