Choke Clear is formulated to clear blockage problem that causes slow & inefficient drainage in most water drain pipes. It effectively breaks up any buildup of rust, algae, scale & slime found inside drainage pipes. Its hassle-free application requires minimum dismantling & gives users the convenience of pouring the product into target areas without the need to scrub! As a preventive measure, this product may also be used to maintain drains and toilets to prevent chokes.