ZepDrain Defense Pipe Build-Up Remover - 64 Ounces - ZLDC648 - Professional Strength Liquid Pipe Build Up Remover,GREEN

We have a creative drain run from our 2nd floor tub. Despite installing a drain "octopus" to prevent hair from entering the drain line, from time to time (a matter of weeks) the drain would slow and the tub would slowly fill up during a shower. I expect it was build up of hair conditioner and who knows what else type of moisturisers my GF uses.As a result I had ro run the snake through the drain line perhaps at 6 week intervals. I tried this Zep product to keep the drain clean. Much to my surprise, IT WORKS PERFECTLY. I just have to remember to use the product at monthly intervals or the drain begins to slow once again.Zep stuff is pretty trustworthy. I learned this as a purchasing manager tears ago. There stuff is not bargain priced, but it does exactly what it says it will. I was a little skeptical when I first tried this. It was a big bottle but on the flip side, it works and that bottle will lat me a very long time when used as directed.If you are having drain problems similar to mine, get this stuff, it works and isn't a caustic and/or environmentally harmful product.

I used this for my kitchen sink which had a bad smell coming up after a mild clog and it worked very quickly. I let Hot water run twice and a little food and other buildup came up then it eventually went down all the way. This worked far faster than Draino. I would recommend it. The only thing I didn't like is that there weren't any instructions. I had to google them

This product does seem to work, but it does take a lot of applications. I went through one entire jug and bought another and used some of it.I would like to see the cap on this be a measuring cap so that you know how much you're pouring out at a time. Because it says x amount of ounces and I don't know how much I'm pouring out of the thing. Plus it flows out quickly.Overall it solved the problem. Not terribly expensive, but expensive enough for one jug of product.

Didn't work at all, drain speed got worse than before, terrible value, only 2 good things are the size of the bottle, which fits nearly anywhere under my tiny sink and the fact the smell isn’t strong

Best clog remover I used to far!! Crazy fast and no terrible smell. Had my shower cleared so fast!!

This worked out ok, but not the best.

We had a huge plumbing issue in our upstairs sink that costs us $800 (which was the cheapest of the possible solutions.) When talking to the plumber he told me to use a monthly enzyme treatment for our drains. So I use this in the kitchen and bathroom sinks now. A bottle of this will last months.

Our first purchase of Zep Drain Defense was then called Drain Care. We used it on a slow draining kitchen sink and it worked great. Fast forward to late 2024's stubborn clogged toilet. Plunged it, then snaked it, and realized the clog was much deeper in the system. Resorted to Drain Care. It worked overnight by pouring 8 oz. then flushing once and leaving the toilet alone. We used it two more nights in a row and the toilet ran as if new.Drain Care is no longer available but Drain Defense and Drain Care are basically the same enzyme-based product. We have since used it in all our sinks, drains, and toilets. This house is 25 years old as is the septic system. We have PVC in our plumbing and minerals in our well water. I would much rather use Drain Defense on a maintenance basis then resort to caustic acids. However, how well it works depends on either what is clogging your sink/drain or how extensive the clog. Zep makes other products suited to complete clogs or specific types of clogs. If you've never done any maintenance on your drains or the history is unknown, this may not help. The 6 hour window is due to the enzyme effectiveness-- leaving Drain Defense overnight or a week won't increase results. This product is probably best when you still have water draining.