Just get the crystal litter from Walmart. They are 10 a small bag 14 for big. I also have an automated cat litter. Only dust when I dump the whole thing out and that's minimal.
Also, when it's full of liquid, that's it, it's full, any more urine just sits there. I've tried it before, and the above person may have a decent experience with it in an automated box, but I have not and also I like run on sentences.