Poorboy's World Bio-Degradable All Purpose Cleaner is a professional grade product for the quick and easy removal of dirt, brake dust, road grime, dust, and some stains. Safely cleans vinyl, rubber, carpet, and cloth seats. Also good for engine bays, wheel wells, undercarriage, and tires. Use of protective clothing, gloves and goggles is advisable. Poorboy s APC is a professional strength cleaner and may need to be diluted for some applications. Use it full strength on the engine, but dilute 1:1 with water for carpet and cloth. Always test for colorfastness. Spray or dab cleaner onto spot and wait a few moments before wiping with a clean, damp cloth. Some spots may require agitation with a soft, nylon brush.