My sister's cat has lost the collar magnet for the cat flap and I wasn wondering if anyone knew if you could use any kind of magnet for the flaps. I see that Tesco sell some collar magnets for magnetic cat flaps but I don't know if they'd work on her particular cat flap. The cat flap that she has is a stay well.
you can normally buy extra magnets for the cat flaps so if you lose one you can go and buy new ones I know pets @ home sell them just find out what the make of the cat flap is and pop in and have a look they aren't normally expensive