Instant Power Eco Clog Preventer - Enzyme Drain Cleaner Liquid and Deodorizer for Sink, Shower, Toilet, Garbage Disposal Cleaner, Bio-Based Drain Defense, Smell Remover and Odor Eliminator - 1 GallonGreen SealGreen Seal

This drain cleaner removes most clogs without having to use a plunger and it smells good too I still have at least 80 percent of the bottle left after using it at least 6 times. See this is also great for drain maintenance so that makes it a great value for your money

The bathtub drain has been running slowly; so, I poured this in the tub and let it run into the drain. Then, let it sit overnight. The next day, I rinsed out the tub to get any residue and the water drained very rapidly. Very pleased. We now keep this in the bathroom cupboard for regular use. It should last a long time as you only need 1/4 cup. We accidentally used more like 1/2 cup but will be more careful in the future. Even so, a gallon is going to last a long time; so, this is a bargain at $18.99 a gallon. When it runs out ... in a year or so ... we will definitely buy it again.

I guess it works. We'll see. There sure is lots of it.

Doesn’t work. Waste of money

Not worth it. Works the same as if you applied a drain cleaner once a week.Instead of waiting all night you pour then flush in 15 minutes.

For a few years I had had a shower drain that would have an odor usually 3 days after the weekly shower cleaning. I would pour a little diluted bleach in until the next weekly cleaning but after few days odor would be back. A month ago started using this product once a week after the shower cleaning and letting it sit in drain overnight for 10 hours. After 3 weeks no more odor. Amazing!

Had to be applied two nights for me but cleared the drainpipes with a whoosh! the next morning - no harm to pipes!

I followed instructions and poured this enzyme drain cleaner down 3 of my upstairs bath sink drains. No effect was seen. I didn't smell the "fresh scent" either. I had half a bottle left so I opened my shower drain where I could see soap scum, hair and yuck. No change on that drain at all. Perhaps my drains are too clogged up with scum and yuck ? This stuff did not work at all for me. Go with something a lot stronger for drain cleaning. (My drains weren't clogged, they just had a lot of yuck in them to where gnats would feast on it. In fact, I think the gnats ate away more scum than this enzyme cleaner did !)