As a cat owner and mom of two in-and-out youngsters, I find it VERY hard to keep our kitties indoors. We rescued the cats from a farm, so they are used to being free to roam. I feel bad when our cats antagonize the neighborhood dogs, but I don't know how to keep them in when the kids prop open doors, run in and out, and the cats beg and beg by scratching on the door to be let out. Maybe I should plant some catnip to keep them from going far.