CLR Brands™ Clog Preventer is a preventative maintenance product that dissolves sources of clogs such as oil, soap scum, shampoo, conditioners, shaving cream, toothpaste, and kitchen waste to keep drains flowing smoothly. Use in sinks, toilets, showers, drains, garbage disposals and grease traps. Fragrance free and safe for septic systems and all pipes! This product is part of the EPA Safer Choice program recognizing the product as a safer alternative to traditional chemicals.