there are several cabinets in our motorhome that the latches just don't get the job done. Twice over the past three years, we've had corel dishes shattering on the tile floor, and every trip the cabin...
Depending on the handle types and spacing of the cabinet doors, You might look at the child proofing isle at walmart. They make some plastic locks that slip over the handles and are adjustable that I have used in the past for just your situation.