Optimum (PC2008G4) Power Clean - 1 Gallon, (Case of 4) Enhanced polymers and emulsifiers degrease and dissolve stubborn deposits without harmful chemicals Use full strength or dilute 3:1 water for most exterior cleaning needs; Dilute 5:1 or 10:1 for interior upholstery, carpet, headliner, dashboard, console, leather, plastic, vinyl No hazardous or harsh chemicals, solvents or VOCs Spray on, allow time for cleaning action but not drying, agitate with a brush or cloth and rinse well for best results Powerful yet safe cleaner for your car, truck, motorcycle, RV, boat and anywhere in your garage