Crystal litter can cut their paws. There is a great one you can buy online so far it's hard to get in Australia kit Kat bamboo kitty liter. Doesn't smell light weight. Clumps at the top. Just top it up change the whole thing at 4 weeks. No dust. It's hypoallergenic for your cat.
The other one if I can remember you can get from Coles or woolies. You can get it in lavender (kitchen) (laundry) or (garage) can't remember the name. But it's low on dust. Clumps. And you need to top it up and change the whole thing 4 weekly. It's in a green packet