After a shower I would be knee-deep in water that would take forever to drain afterwards. I used one whole bottle in the standing water, and then used a full bottle after it drained and it cleared the clog completely. I've been using a little once a week for maintenance.

Did not clear clog in sink after several tries and letting sit for several hours. The clog was a few feet after the p-trap and is a recurring issue - it happens where the air condition drains into the sink line, which maybe is not the type of material that this product breaks down.

Did not clear sink clog, had to purchase a better solution.

Keep on hand for clearing clogged drains.

I haven't had any luck with this product. I have used both bottles in my tub drain and it still doesn't drain well.

My house has the old cast iron drain pipes that clog easily. I have found that Drano Max Ultra Gel works best on clearing clogs in these type pipes.

Had a hair clog in my bathroom sink. Worked as advertised on the first application. MUCH cheaper from Sam's than big chain hardware store.

Poured approximately 50 oz into my sink drain, which was very slow to drain, and allowed it to sit overnight... resulting in a totally blocked drain. ended up using a drill powered auger to remove the blockage. So much for the guarantee that it will work or your money back.

I have used this in the past to unclog a bathroom sink drain. Purchased a 2 pack this time to use in a couple slow drains we have. It took some doing (and almost a whole bottle) but I think it did the job. Using drano helps unclog drains and keep a plumber away. Great price for a 2 pack!

Didn't work on a kitchen sink clog. I can only assume it was comprised of food and grease, but ... it didnt work. I had to restore to a plunger. Gave it an extra star in the hope it works on hair and built up soap residue if I have a future bathroom clog.