We use Kitty bloom and some others, but for Raw diets without bone, we add the calcium too.
We have had different ones over the years, but the Ferris Cat Wheel is the highest quality for your money. There is one that says something about "Fast", DO NOT PURCHASE IT! IT DERAILS AND COULD BE VERY HARMFUL FOR YOUR SAVANNAH. The latest G5 Ferris Cat Wheel is a fabulous exercise wheel especially designed for your cats. The wheel provides safe indoor exercise, fun and mental stimulation for indoor cats, especially the more energetic breeds like Bengals, but Orientals, Siamese and other breeds have been taking to them with ease. The wheels are lightweight yet strong and stable. The Ferris cat wheel has an UNBLEMISHED track record for safety - this wheel NEVER tips or derails!
Whatever litter box you choose, always get a large/jumbo sized box. We have found this to work well, you can use it with or without the hood.
Petmate 22026 Jumbo Hooded Litter Pan
We purchase on Amazon
Buy toys for your kittens, they are hi-energy breed and need a lot of physical & mental stimulation.
We have found this to be more than what pets store sell for three times the price, same litter. Tractor Supply, usually $5.99, but we just got it for $5 each, 40lbs.