No matter what we try he won't stop scratching the wall next to his litterbox while trying to bury his shit. The only thing that works is physically blocking him from scratching the wall, but the only thing I can think to put between his box and the wall is a shoerack, which I would really like to be able to use without the risk of shoes falling into his litter. We're in a small apartment so working with very limited space and can't just have it pulled away from the wall. Just wondering if anyone has any ideas on what to replace the shoe rack with
How often the box is cleaned and how often the litter is fully exchanged also can have a big impact. Some cats have zero tolerance for touching 'used' litter.
It may be worth investigating different kinds of litter as well, especially if it appears he doesn't want to touch the litter with his front paws to 'wipe'.