Our make cat has recently been introduced to a cat flap with magnetic link to his chip. He has been fine going in and out, but doesn't want to leave it, inside and out. It's worse on the inside and during the night he can sit by it all night. Help! Will this wear off or should we take his mind off it. About 2 years ago he got fixated by a patio slab outside back door. He would just sit and watch it, in the end we had to move it. Has anyone got an idea how to stop his behaviour with cat flap. Any advice will be greatly received.