To Clean and Deodorize: Rotate nozzle to on. Spray 6-8 inches from the surface and allow product to penetrate dirt and soap scum. Wipe with a wet sponge or cloth and rinse with water. For tougher jobs, spray and let product stand on surface for several minutes before wiping. Use regularly to help prevent buildup of stains. Rinse immediately after use on rubber, plastic and vinyl. Avoid prolonged contact with metal and old porcelain as this product can react with these materials and leave a "rusty" stain. Do not use on wood or painted surfaces (unless you plan to refinish or repaint them). This product may not be able to remove mildew embedded in hard water deposits, old grout or silicone caulking. Avoid contact with aluminum, clothes, fabric, carpet or paper surfaces as they will discolor.