Roebic Laboratories, Inc. K-97 Main Line Cleaner, 32-Ounce

good product

Cleared blockage, no problems so far.

Worked where nothing else would!

Product in use but too early to tell if it works.

Tried this to clear a slow kitchen drain. I had gurgling when water was drained away and tried this so see if it would help. If anything the gurgling got worse so I would NOT recommend this product. Waste of time and money.

Bon produit

I’ve been dealing with slow drains and stubborn sewer line buildup for years, and honestly, this Roebic K‑97 Liquid Main Line Cleaner has been a game‑changer. This product actually works — not just temporarily, but consistently — and has become an essential part of my home maintenance routine. What sold me on this cleaner right away was the science behind it: Roebic uses beneficial bacteria and enzymes to digest organic wastes like paper, grease, fats, and sludge that tend to build up deep in sewer and septic systems. It’s not just a quick dissolver — it breaks down the stuff that causes recurring clogs, so you see real improvement over time. And best of all, this happens without harsh chemicals, which is important when you have septic systems or older plumbing. I’ve used the K‑97 both as a preventative measure and to tackle existing slow drains, and it has performed beautifully in both cases. After adding it according to the directions, I noticed a measurable improvement in flow within just a couple of days. Toilet bowl water clears faster, sinks drain more smoothly, and the whole household plumbing feels less sluggish. One of my friends with a septic tank noticed fewer odor issues after regular monthly treatments too, which is something I’ve seen echoed in other reviews. This liquid cleaner is also extremely easy to use — just pour the recommended amount down the toilet or main drain (preferably at night), then let the bacteria go to work. There’s no need to mix, heat, or handle harsh chemicals, and there’s zero risk of damaging pipes. That peace of mind alone is worth it, especially if you live in an older home or care about long‑term plumbing health. Another big plus is how economical it is. The 32‑ounce bottle goes a long way — a single bottle treats your system multiple times if you follow the dosing schedule. Many users, myself included, buy this periodically as part of routine maintenance, and most say they see better results than with traditional chemical cleaners. I’ve tried plenty of products that claim to fix septic and sewer line issues, but very few actually deliver consistent results. With Roebic K‑97, I finally feel like I’ve found something that lives up to its promises. Clogs that used to stubbornly come back rarely do now, and everything stays flowing smoothly between applications. My only small note is to be patient — because it’s a biological cleaner, it works with your system over time rather than “instantly blasting away” like a chemical might. That’s actually a good thing for long‑term health, but it’s worth knowing before you use it. In summary: This product is powerful, safe, and surprisingly effective. If you want a reliable way to keep your sewer line and septic system clear of organic buildup — and avoid harsh chemicals — I can’t recommend Roebic K‑97 highly enough. It’s become a staple in my home care toolkit, and I’ll definitely continue using it. ⭐⭐⭐⭐⭐

This is the best drain cleaner i ever bought.. it works very fast. i will be getting more.

２週間近く前に、ペーパーを一気に流しすぎたのが原因で 流れが滞るようになってしまいました。 （不幸中の幸いで、完全に止まってはいなかった） これはなんとかしないと・・・と思って、藁にもすがる思いで購入。 説明書き通り続けてみるも・・・実はこの商品だけでは解消されませんでした。 説明書きで”ラバーカップの併用”を勧めているように、軽度のものでないと この商品だけではどうにもならないようです。 ラバーカップを使った時に、突然凄い勢いで水が流れだしたのですが それまでのバクテリアさんの活躍で、軟化していたのではないかと思うのです。 カップだけではこうはならなかっただろうと。 解消後は、それまでの水流とは一段レベルの違ったものになっており なんやかやと付着していたカスなども一掃された印象です。 その意味では効果はあったのだろうと。 結局のところ、詰まりが発生しない使用が大事ってことですね。 いい勉強になりました。

Our bathtub wasn’t draining when we showered and would audibly gurgle when we flushed the toilet. We tried snaking and pressuring washing the line (DIY) with no change. Added this to the toilet and shower drain (diluted) for 4 days and it’s draining totally fine after long showers! Snaking/ pressure washing may have helped it work faster, but this was totally worth the money and worked way quicker than I expected for such a tough blockage