@Poof; I just checked; my daughter left a large bag of the corn litter here. I have been using it with 1/2 Arm and Hammer litter.(The video-mercial was a little scary; the guy ate some of the stuf; and he used neither real cat urine or feces. AND there was a warning from CA to leave dirty litter in trash rather than flushing it.)
But I do not have the short safety interval that you do. Milo is polite and goes once or twice a day.
My pipes and septic can barely manage human waste. After a toilet-paper overload only, I am there with the plunger.
I think that the screen attachment is a wonderful idea. I wish that I had a few screens that were intact. I was planning a trip to hardware store tomorrow for screening to place over screens that Milo has shredded. I’d need 8 scratching posts at least, given the layout of this house.
Astonishing how devoted I have become. Your help has been invaluable.