Drano Liquid Clog Remover opens drains fast! This product dissolves clogs quickly and effectively in kitchen or bathroom. Contains an ingredient that protects pipes from corrosion. Safe for plastic, PVC and metal pipes, garbage disposals and septic systems. This liquid clog remover won't harm pipes when used overnight or cause septic tank problems. Read label before use. Use only as directed. Application: Drain Cleaner; Applicable Material: Metal; Plastic; PVC; Dirt Types: Food Debris; Grease; Hair; Oil-Based Soils; Organic Matter; Water-Based Soils; Scent: Unscented.