Drano and dish soap
Stays fresh: About 2 years. - Volume 5 gal. The first and easiest method to unclogging a drain is to simply boil some hot water in the kettle or stove and get some dish soap ready. EL DIABLO-SULFURIC-DRAINCLEANR 1qt #AQUA-HS1. The soap is denser and heavier than water and should drop to the bottom of the bowl.
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