Drain care build-up remover clears clogs in stopped drains and helps prevent future clogs. The concentrated, enzyme-based formula breaks down years of drain-clogging build-up to open slow drains. The certified, biodegradable formula is ideal for sinks, toilets and showers and breaks down into carbon dioxide (CO2), minerals and water. The product comes in 64 oz bottles and is recommended for monthly use to maintain pipes in the home.