HG drain and plug unclogger is a product used for a blocked drain pipe in a sink or shower drain. This liquid drain cleaner works thoroughly and effectively and does not affect plastic pipes. The only slight increase in temperature that this product causes while unclogging a drain makes it safe for use on any drain pipe, toilet, urinal and bidets, and even on porcelain and ceramic bowls. It is a ready to use product and does not need to be diluted, which means there is less chance of splashing