Every time he is removed from a cupboard he goes ballistic. He really does seem to believe that it is a 'serve yourself' free for all round here. Especially at lunchtime (he is at the age when he misses lunch because of naps so has a snack before and after). He wants to raid the cupboard or nothing else.
The little click locks are cheap - but do they result in trapped fingers a lot? He's a nightmare with fiddling, so pretty much pain with all drawers and doors etc anyway.