The problem with lever handled door knobs

is that your cat will figure out how to use them. Unfortunately, he won't open the bathroom door to get to his litter box if that's been closed accidentally. He only opens the laundry room door. His food is in the laundry room and he'll try and get in there even if he's been fed recently. Apparently, unlimited access to food behind a closed and latched door trumps the carefully measured food easily accessible in the food dish.