Sano Blue Water Toilet Bowl Cleaner Long Lasting Air Freshener WC Tablet Pack of 1

Excellent once you know the trick to get them working! These last ages, I recommend them but occasionally a new one will seemingly be faulty and won't turn the water blue. You*don't* need to drill into the plastic as some have stated. Simply turn the unit on it's side when fully submerged in the cistern and shake it around a bit whilst also revolving it, keeping it under water all the time! You simply need to get the air block out of the unit as that is why it isn't working. Once you see blue coming out of it, keep it submersed as you stand it upright so you don't let any air into it. This has worked every time for me but you might have to repeat it once or twice before it works. Do this on initial "install" (if necessary) and then you can forget about it till it needs changing months later... They really do last a long time and are totally worth this occasional, minor hassle.

Put in cistern and forget until the colour fades to no colour I guess. Have been using for about 40 days now in the busiest toilet. Still blue not dark as first time but medium and not light at all. Keeps the toilet clean, so very little cleaning needed than before. Not as fragrant very faint to nothing after few weeks. But you know it's working cuz no smells either unless you don't flush. Really impressed with this thing. Didn't do any DIY on it to sink to bottom. Im gonna use it in every toilet I think. Could improve on the scent a little but that's no big deal.

last long time nice blue

One thing I would urge people to consider is the size of your household. There are only 2 of us and 1 lives here part time. So inevitably this WILL impact on how long this will last. For me it’s lasted absolutely ages and has worked well.I waited until this had run out before reviewing to see how long it lasted, and my goodness it has lasted very long. It only ran out today, rather abruptly though. Last night the water was blue today not. So no warning it’s nearly finished by changing to a paler blue. It cleans well. I’m not sure if it’s supposed to have a fragrance, but I couldn’t discern any and I wasn’t going to stick my head down the pan to sniff the water!I shall be ordering again.

This is second time I’ve bought this and it’s going to be a regular buy now, it takes a few flushes to come through but when it does it’s a really nice, light scent, not thick and clingy like toilet cleaners, and is a clear, icy blue shade that seems to last forever, highly recommend to anyone

Brilliant product, Nice blue tint to toilet water! I have had ( NO ) problems installing and getting it to stay at the bottom of the cistern and because its contained inside a plastic tub you don't get that messy gunk that stays in the toilet cistern when product has ended. I just held it under the water for 15 seconds and waited for any trapped air bubbles to come out and it sank to bottom with no problems! Also when the product does run out you can easily open the tub and fill it with those In Cistern Blue Blocks and that way you don't get left with that horrible blue slimy gunk that stays in the cistern and also works out cheaper :)

I like the container, easy to place in the cistern. It cleans the toilet bowl but The thickness of the liquid is too thick. I would like to have had less coming out In each flush. I can’t tell the longevity of it as I am still using it. There’s no scent to it. What I do like is that it prevents metal stains in the bowl.

Not compatible with standard size cistern as too big so gets stuck and toilet doesn't flush properly