Some of the most effective chemical-based drain cleaners are Pure Lye Drainpipe Cleaner, Oatey Glug Drain Opener and Drano Max Gel Clog Remover, according to drain cleaning products and information website DrainCleaner.org. The site also recommends the Cobra Zip-It Drain Cleaning Tool, the Cobra Power Drainpipe Clearing Drum Auger and the CLR Power Plumber Drain Opener Pressurized Can to clear a drain without or in addition to chemicals.
The degree of drain blockage dictates the method of clearing the clog. Completely occluded drains that do not allow any water passage may require the service of a professional plumber. For less serious blockages, a combination of a chemical agent and tool often clears the clog. An auger commonly called a plumber's snake is a drain-clearing tool made of plastic or coiled wire inserted into the drain and rotated to collect whatever material is blocking the pipes, then withdrawn from the drain, carrying the muck with it.
Enzymatic drain cleaners are useful in treating a slow-running drain over time. They come in powder or granulated form and slowly dissolve materials congesting a pipe, making them an effective form of clean drain maintenance. They are mineral-derived, biodegradable and non-corrosive, with a lower environmental impact than acidic or alkaline-based chemical solutions.