I've started doing this recently. We've been using the wood pellets for over a year now (I like them the best because they are cheap (about $6/bag) but most importantly they don't track litter around the box or the house!!! Having a kitty in kidney failure that not only gets sub-q fluids twice a day but also drinks a lot of water causes a lot of traffic in the litter box. We found that we were filling up our weekly garbage bin quickly by tossing this in the trash so started a compost pile next to the garage in the back alley. We separate the urine from the solids and we toss the solids down the toilet or in a garbage bag. I thought it would be safer that way. I'm not sure we will use this in the garden but I don't see why we won't be putting it around the perennials next spring.
I looked a lot online when I wanted to start this for information but there really wasn't any. I came across this article today. Check it out.
Wood Pellets Make Cat Litter Compostable Tejas Cattery
