Zep Drain Defense Enzymatic Drain Cleaner Powder 18 Ounce

No amount of cleaners or bleach could get rid of the smell coming from our bathroom drain. Couple doses of this stuff and it’s good as new. Highly recommended!

As renters (who used to be homeowners), we noticed the drain of the kitchen in the house we are renting was emitting an unpleasant smell-- not like sewage, but something like old food-laden dish water. None of the solutions we tried worked, and meanwhile the kitchen was starting to smell pretty embarrassing, despite the sink draining normally. After doing some homework, we decided to try this enzyme cleaner. A scoop wasn't included in the bottle but we googled this, and found 1 scoop is approx 5 teaspoons, so we mixed 5 teaspoons into 2 cups of warm water to follow the instructions. After 3 nights of this treatment, the drain issue is solved. It seems to have improved the outcome of dishwasher use too, even though we didn't directly treat the dishwasher (the dishwasher drains into the same pipe as the kitchen drain). We'll do maintenance treatments as recommended. Just relieved this odor issue is resolved.

Worked great on drains. Bought a second to keep drains clear, and smell free

It did not kill drain flies like I expected,but maybe the drain is clean.

My plumber recommended this product years ago and I use it every month in all my drains. Works great. The box stores only carry the liquid kind so I purchase this on Amazon.