Unclog drains in minutes with Liquid-Plumr Urgent Clear. Its 3-in-1 action destroys hair . soap scum and grease fast. Using two powerful gels . the first gel cuts through standing water and unclogs total blockages in 7 minutes. The second gel clears slow-running drains. Perfect for the sink . tub . shower and garbage disposal . Urgent Clear is safe for all septic systems and pipes . including PVC . plastic . metal and old pipes. The patented formula destroys the top 3 causes of clogs: hair . soap scum and grease and deodorizes in just one use. Do not use with a plunger . in toilets or with ammonia . toilet bowl cleaners . or non-Liquid-Plumr clog removers (to avoid the release of hazardous gas). Liquid-Plumr contains biodegradable surfactants and no phosphorus. Excessive heat or cold may cause Liquid-Plumr to form clumps . but this should not affect its performance.