Amazing In A Flash Drain Cleaner is an extremely effective and powerful solution that opens up the worst hair clogs and slow moving drains in minutes. The secret is in the combination of ingredients that dissolve clogs and liquify hardened scum and grease lining the pipes. The solution accelerates the dissolving reaction giving results in minutes. Works with all types of plumbing and pipes. Pours through standing water and is safe for all septic and plumbing systems.