DEAR ABBY: We have a small house, and family and friends are always welcome. We also have six cats, and their care and comfort are paramount. We keep our cats separated so they don’t fight, so two cats occupy what used to be our guest room. We have explained this to overnight guests, several of whom are allergic to cats or don’t like them, and they insist “everything will be fine.” They then refuse to let the cats into the room during the day, while our distressed feline family members howl and claw the door. There are simple things that ...