Our drain foam cleaners contain sodium dodecyl benzene sulfonate and disodium EDTA. It can be cleaned efficiently, leave no trace, often clean the pipe, mild formula, comfortable experience, strong applicability, safe and reliable. Its use is simple: after the cleaner has done its job, flush the drain pipe with plenty of clean water to ensure that the dirt and detergent are thoroughly washed away. Flush the drain with water to make sure there are no significant large foreign objects in the drain. Place the product in the drain and let it sit for 10-15 minutes to allow the foam cleaner to take full effect in the drain and soften dirt and oil. It also helps to remove grease and dirt from pipes. Propylene glycol butyl ether effectively dissolves residue and dirt in pipes. Laurel 7 Gently cleans surfaces to keep pipes clean and smooth.