M.K.
MOM,
I Don't use any cabinette locks, i simply teach my kids NO
If he gets in there say NO, and then pop him in the high chair,
OR playpen, or stroller, or anything he can't get out of,
When your cooking put him in his chair, and give him a snack
When your doing laundry, PLaypen
When your outside working Stroller
When you need 5 minutes to your self a little chair
USe his crib strictly for napping.
Believe me, its not easy but they get the message, just be firm.
M