ParozoneIn Cistern Strongest Bleach for Toilet Block, Twin Pack, 2 Count (Pack of 10)

I used PARAZONE BLEACH BLOCKS for many years until stores stopped selling them. I dislike BLUE water in my loo's .... I prefer it to be pristine and clear. I used ONE blue block 2 weeks ago and it just disintegrated in a couple of days with blue blobs in the pan, blue water really looks grubby too.A BIG THANK YOU to those who answered my question about the water colour of these. The older Parazone were white blocks so I was unsure about these.AT LAST I found the BEST bleach blocks on the market. I have read they don't last as long as some others BUT, I want the BEST QUALITY and PARAZONE is THE ONE, they keep everything very clean.They are brilliant and I highly recommend them.

I find these to be the best in cistern toilet blocks. I don't like coloured water ones, because it is difficult to see if the bowl is clean or not. These don't colour the water and the smell is ok. The only problem is that they seem to be difficult to get because they are often out of stock. They seem very popular in the other reviews. and I highly recommend them.

This is the only one that really works, hard to find now unfortunately.

I wish they lasted longer! We are not home during the day, so we don't flush the toilet very often, and yet after barely two weeks if that, no more evidence of the product being in the water (no bubbles after you flush, no smell, nothing). But during the two weeks they work, they work very well. Now I just replace them every 2 weeks, but I do wish they lasted longer.

Bought to deal with mould formimg in wc water outlet holes, they seem to have cleaned things up so far.

Really good at cleaning toilet and noticed significant reduction in lime scale build up. But only lasts for five to six days before total dissolve, hence the 3 star rating. Package claims replace every 4 weeks or when foam fades (5-6 days for me in a hard water area). No way this product lasts four weeks but good for 5-6 days, so I’d give it a five star rating if the price was dropped by 75%.

Can't get these anywhere got a good deal so brilliant 👏

Keeps toilet fresh with each flush used before . Would of preferred a cheaper price also they do not last very long as if fake