A litter that attracts cats can help with this. Ming has a chronic crystal condition and he used to pee in the bathtub or on the floor by my bed. My vet put him on amitryptiline and he started using the box again. If Mystic doesn't start using the box soon, ask your vet about meds. I was against meds, but they were a last resort for Ming. He has been crystal-free for over two years now!