Cillit Bang 3-in-1 Power Cleaner Odour Stop Drain Unblocker Gel, Drain Cleaner For Kitchen Sink Drains, Bathroom Showers, Baths & Basins (Pack of 5)

Honestly was skeptical with other reviews.Our bathroom drains are quite badly blocked so that the water very slowly drains away.First few hours, nothing. Boiling water and day after, same.HOWEVER... today I have plunged and poured more hot water and I can say - it's worked! The water runs quickly down the plughole and no more slow draining.If this happens again, I will definitely be purchasing again - 5 star!

Done the job, got rid of the blockage!

After years of fiddling with boiling water, wire snakes, soda-vinegar volcanoes, and half-hearted supermarket gels, we finally settled on Cillit Bang’s 3-in-1 Power Cleaner Drain Unblocker Gel as our house standard—and honestly, it’s hard to go back. It doesn’t just help—it obliterates blockages, and not just in theory. It works in real-world messes with hair, oils, and all sorts of nastiness from kitchens, bathrooms, and utility sinks.We live in a household with long hair and heavy daily use of showers, baths, and basins—my wife’s hair goes well past her waist, and mine is shoulder-length and coarse. Combined with conditioner, shaving residue, beard trimmings and even the occasional DIY clay face mask, our bathroom drains used to clog weekly. Since keeping this in rotation, those annoying slow drains have been a thing of the past. The most satisfying moment? Watching a shower drain go from murky and bubbling to fully clear in just over five minutes, no plumber’s fee involved.But its use isn’t limited to the bathroom. In the kitchen, it’s helped break down stubborn build-up from oily pans and food waste where even our strainer had let bits through. We’ve also used it outdoors in a floor-level utility drain after washing muddy garden tools and pet bedding. It cut through the clag quickly. We’ve even cautiously poured a measured amount down the rarely used downstairs cloakroom basin, just to keep the pipes fresh and prevent the musty, stagnant smell that can settle over time.That said, this stuff is not a casual cleaner. It’s an industrial-strength chemical in household clothing—and if you underestimate it, it will bite. The smell is acrid and aggressive, and while it’s effective at stopping odours long-term, it creates an instant wave of chemical fumes that can irritate your eyes, throat, and nose. That’s why we’ve got a routine now: open windows wide, turn on extractors, and leave the room completely during and after application. We also don’t pour it straight from the bottle anymore—we decant into a plastic measuring jug to control volume and avoid drips, especially when working over deep sinks.Gloves are a must. Even a tiny splash can sting, and it’s easy to get careless if you're used to handling milder products. Once I tried using it quickly without gloves and later noticed some irritation on my knuckle—minor, but enough to prove it’s not something to handle bare-skinned. Keep your face well away when pouring. I’d also suggest removing children or pets from the area entirely and locking the room behind you until the job’s done and ventilated.We’ve found that using it as a monthly preventive measure works wonders. Instead of waiting for the drain to slow, we give our busiest pipes a treatment every three to four weeks—especially the shower and kitchen sink. For us, one bottle usually covers two key areas, and we always keep a few in the utility cupboard for emergencies.It also works in standing water—one of its most useful features. There’s no need to bail out a full sink if the water won’t drain. Just pour it slowly and steadily through the surface layer, wait for 5–10 minutes, then flush with hot water. It clings, sinks, and works its magic from the inside. For stubborn clogs, we give it a second round followed by a plunger to finish the job.However, it’s not a miracle for every situation. For blockages caused by foreign objects (a plastic hair tie, for example), no chemical will help—you need a physical solution. But for organic gunk, grease, hair, and residue? It’s ruthless and dependable. Over time, we’ve come to view this not just as a cleaner but as drain maintenance—a way to extend the life of our plumbing and avoid expensive visits from professionals.Recycling the bottles is easy—they’re clearly marked and sturdy. But they do empty fast, especially if you’re dealing with bigger sinks or multiple drains. If you’re using this for a full household, the 5-pack is excellent value and lets you build a maintenance schedule rather than treating blockages reactively.To sum up, this isn’t a soft, daily-use product—it’s a sharp-edged, targeted strike against drain disasters. Used with care, respect, and a bit of planning, it becomes an invaluable ally. It’s transformed our household routine and turned what used to be a dreaded hassle into a five-minute task we barely think about anymore. Just treat it like what it is: a powerful chemical tool, not a fragrance-filled surface spray. Respect it, and it delivers.

It really worked and it had a hard job to do! A mixture of hair loss, vomit & clay face wash..I know nice eh..and it shifted. We used the whole bottle in 2 seperate applications just to ensure the pipes were cleared throughout. Definitely would buy again

Bathroom sink was extremely blocked, water wouldn't drain away at all and we tried a plunger to no avail. Ordered this product to give it one last chance before having to get a plumber. The item came with a unblocker tool which is a long piece of plastic with thorn like spikes that you use before adding the solution. The tool was so good and the amount of horrible stuff I pulled through plughole was unbelievable! It was still blocked though so I poured the solution down the plughole and it was sitting in the sink not going anywhere I covered the sink with a towel and went to bed to hopefully let it do its work. I was only in bed for around 10 mins and I heard the biggest gurgle coming from the sink and thought I think it's working!The next morning the sink was empty and the water ran away clear with no issues! It worked so very happy! Great product, good value as sold in 2s I would recommend this

Not great at the clearance of hair but cleans the area very well. I did follow all the instructions but it didn't work

Drain obstruction Water draining water flow drain speed.

Worked a treat overnight when left in the bathroom sink. That's one way too slow down the wife's shedding!!