Someone had asked about big cats and this system. I have a 22-lb grey Tomcat (Phinneus), and a 20-lb Maine Coon (Murray), and they transitioned to the Breeze system and have been really good boys about it.
Phinney had some troubles with loose stools which were solved by changing him to a food with a slightly higher fibre content ( went from 6% to 8% fibre)... made all the difference in the world.
We have 5-cats in the house... and the Breeze system has changed our lives

.... no more smelling like a shelter!!!!

With 2-huge boy cats - you can imagine the smell from normal litter, even with my obsessive compulsive tendency to scoop and clean all the time. This has been the first litter that allows my nose to rest, and makes it comfortable to once again entertain at home.
Again... the transition for our team took a bit.... more than a couple weeks. But now - it's ALL GOOD. OH!! I also put more pellets in the base than just a single bag. I put two bags worth in and that seems to provide the density that their paws expect in a litterbox situation. Hope this helps. I'm new to the forums here.