Review on Bio-Clean Ultimate Drain Cleaning Kit: All-Natural & 100% Guaranteed to Clean Drains, Septic Tanks, and Grease Traps! No Caustic Chemicals, Removes Fats, Oil, and Grease. Complete System Cleansing! by Chris Cruz

Our sink has failed twice in the last 10 years, but quickly clogged up again each time. The problem is likely related to the angle at which our copper household pipe connects to the sink pipe and may be a result of the replacement plastic pipe we installed 10 years ago connecting to the new sink's PVC pipe . several sewer cleaning chemicals, most of which don't work at all. This is best of all. However, be prepared to use it daily for a week until it wears off fairly quickly, then reapply every few weeks. to keep the drain open.