Life can be complicated, that's for sureI did look at these but they weren't practical as ours is a large range cooker. Apart from that, we keep the cat food in the kitchen and the dry food would have ended all over the floor and we would also have had very fat cats
The door lock was the simplest solution and works like a charm
My son has accidentally (probably on purpose) locked me in the kitchen a couple of times. Held to ransom "Make the chocolate cake or I don't let you out"