Bloo 2in1 in-Cistern Toilet Blocks Original 50g Limescale Remover Cistern, Cleaning, Foaming Action and Fresheners

Worked good but delivery took weeks. You know is Amazon people like our stuff delivered quickly.

They are working but dissipate too quickly

Not blue, no clean smell - don't buy.

Beware the 'up to' 800 marketing catch all, The pack says 800 flushes on the front, on the back it says 'up to', but in actual fact, although I followed the instruction to the letter ensuring the cube was on the opposite side to the water flow in the cistern but this lasted just 10 days, around 50 flushes max! Buyer beware, although they do smell nice, pouring in Channel No 5 may be more economical! UPDATE: The above was anecdotal from memory, so I thought, to be fair, lets be scientific about this. Now you may say i have too much time on my hands if I am going to mark off each flush, you could be right but it is a matter of principle when something is so blatantly falsely advertised by a trusted brand. So, the results are in, a single cube (in this pack of 2) lasted a mere 32 flushes! So even if the 800 flushes, emblazoned with such fanfare on the pack ('up to' referenced by a small print asterisk, mmm) was for the pack (2 cubes) and not per cube, the total pack flush count would be around 64, so not even 10% of the advertised value! The cube lasted 9 days before it was completely gone, so you will be buying around 2 packs per toilet per month. Like I said, smells nice, but I will not be buying again as I don't like being duped by a 'trusted' brand.

I live on a chalk hill. It's an aquifer and my tap water comes from the deep reservoir within it - which is why my tap water always comes out chalk white! I have to run it for some time for it to become clear. It deposits lots of limescale into everything that needs a water supply, including my toilet and cistern. Nothing has worked well enough to remove much of the limescale that's built up in my cistern and toilet bowl too (to a lesser degree), despite many products and much scrubbing. The flush has even become less powerful over time, from the limescale I can't reach! I bought these Bloo cubes on a whim, purely because I'd not tried this particular Bloo product yet. I'm constantly searching for anything to do the job better. These turn the water blue and smell nice. It's a clean smell and not overpowering when the loo is flushed either. It's just enough for the bathroom to smell nice. I suppose it could smell stronger but it's not the smell I'm interested in, as long as it's not a choker. Less than 24 hours after popping one in the cistern I noticed the limescale was reduced and within 1 week the flush was more powerful! I couldn't believe it. One cube lasted us 5 weeks in total and during week 4 the flush was really good, flushing almost as well as it used to! The toilet bowl is definitely not coated in as much limescale either, it's more shiny and definitely smoother. It also helps keep the toilet clean after use, meaning now it just needs a quick clean daily and a weekly scrub. As the only cleaner in my household this is definitely a good thing! As you can likely tell, I'm very pleased with this product and I hope it works as well for other people. I had a lot of scale to remove compared to a lot of other toilets I've seen or cleaned, but I assume it'll work well in a situation with less scale, although perhaps it might not be as noticeable as the changes I've seen. There's a green Bloo cube that keeps away limescale. I've not tried that yet as I'm still on my 2nd blue cube (not as much of an improvement to report as the first cube used), but I'll certainly consider it after this cube has finished. I'm hoping it'll maintain this this reduced level of limescale. If not, I'm back to these blue Bloo cubes... until I find a better product!

Finally a product which does exactly what it says it can do!! My flush tank plunger used to keep getting stuck because of hardwater salt scale issues, but now I've seen a noticable difference in my commode flush tank after a day of using it. No more plunger sticking issues because of its effective cleaning strength. It also has a nice subtle scent that's not too strong. Totally worth the price for this quality, but if you place it close to the water filling point in the tank, then it won't last for 200 flushes, so keep this in mind while putting it in. I'm very happy with this purchase & definitely recommend it if your commode has a hardwater supply.

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Product works well but It just lasts for 5 days that's it.