Again: Does not know what the manufacturer promises.

As already written in my review of the manufacturer Catwell, I have to at Karlie "Percato" complain: The sensational promises of the manufacturer (up to one month fresh in the toilet) keeps the product in any way. I was switched to Silicate Litter after my cat diagnosed with diabetes (12 years old). In diabetics, much glucose is excreted in the urine, which resulted in the normal clumping litter used to date, that these strong and tough like clay and the toilet was so completely filthy. Here is a great advantage of Silicate Litter that reliably prevents moisture and includes, without sticking or clumping or sticking to the toilet floor. Very hygienic, very clean.

Nevertheless: A major criticism is and remains the low longevity of the product. Exactly this life but sometimes utopian price is justified. In the case of "Karlie Percato Rocks" proud 1.45 euros per liter. That makes 7.25 Euro at 5 liters. In various drugstores I get a similar product for 4.99 euros / liter 5. However, the low durability they have all in common. After just one week, I have to completely change usually stray. And it is not true that the silicate beads (Rocks) completely enclose the smell over the full duration. After one week, the yellow-colored beads smell very well. Although they take quite more liquid, are then but not more odorless. After a maximum of four days it begins to smell. This experience I have made both "Karlie" as well as "Winston" or "Catwell". As a 5-liter bag litter so to keep a toilet for two cats two weeks clean and fresh when a sick cat (which is about two pieselt) just enough so a week is beyond me. Here in my opinion, is advertised to completely unrealistic to bring a very expensive product to the man.

I'm ambivalent, but no choice but to stay in silicate because of medical particularities of my animal and consequent difficulties with the standard clumping litter, and has to swallow the high extra cost grudgingly.