Geberit 4 x AquaClean descaler 147040001, transparent, universal

Expensive. But does the job and only have to use 1 bottle every 3/4 months. So well worth it.

Expensive to have to buy in packs of 4. It does as it says on the tin

The toilets light was flashing for its yearly descale, I was advised by the manufacturer to only use their products so as not to void their warranty.. Having used the product the toilet is no longer flashing and is working as it should.. Can't say fairer than that.... 😉

Great product

Items came quickly and were the cheapest.

Does the job

Really good stuff but a little bit too expensive for the size of the bottles

Good