Hi I have 2 cats about 9 months now lovely friendly, kids 6 and 9 love them and when they are going up to bed the cats head up too female cat always goes to DD 6 bed lies on bed all night the tom cat goes to my DS 9 bed but doesn't mind if he doesn't, female cat goes mad if isn't up there I'm just wondering if it's ok to allow this, they have had flea dose and all but I did notice a bit of chewed up young rat in the garden? I'd be worried about the kids picking up something.