Drano Liquid Clog Remover opens drains fast! This product dissolves clogs quickly & effectively in kitchen or bathroom. Contains an ingredient that protects pipes from corrosion. Safe for plastic, PVC & metal pipes, garbage disposals & 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.