

I use a 1/4" drill bit to drill holes in the bottom of one of the containers. With some containers the gap is *very* small. Be sure to check for this gap before you buy the containers. I find containers so that when they are put together there is a good gap (~2") between the bottoms to allow room for the sawdust. I'd really stick with Sterlite containers if you can find them. They had problems with cracking while drilling. Note: Someone else tried this but didn't use Sterlite containers. Until yesterday when I found that someone had peed on the guest bed. LOVE IT! So I switched another one of the old litter boxes for a Breeze system. All the cats seemed to like it and were using it (I have seen Theodore use it several times), and I love that there is no litter tracking and no odor. I bought the Breeze system and replaced one of the litter boxes with it. I switched to high-sided Rubbermaid litter boxes and things have been perfect ever since - no peeing incidents at all. After much experimenting, it turns out he just didn't like our litter boxes (they were top-entry covered boxes - so I can't say I blame him therel he probably felt claustrophobic). We went through a big ordeal last year where he was peeing on rugs and the sofa and everywhere - extremely stressful, and there was no apparent medical cause (he had lots of tests done, believe me). My big cat, Theodore (23 pounds!), is rather picky about his litter boxes. It works fine for us, and that's good because I have absolutely nowhere else to put another box. At night, we keep our bedroom door closed so the cats only have access to 2 of the boxes. I have 3 indoor cats, and 3 litter boxes. I wasn't sure whether to post this here or under Behavior.
