I had a clogged shower with 1/2″ of standing water and no Drano or LiquidPlumr. Out of options, I thought I’d pour a few capfuls of Melaleuca MelaMagic over the drain. I didn’t really think it would work, but within 20 seconds, the clog completely cleared up and the water slurped down the drain. Amazing!! I’m a customer for 5 months and still learning!