I screwed two hooks above and below our refrigerator doors in the wood trim. I then take a bungie cord and hook one end and snake the cord through the refrigerator handles and then pull it taught and hook the other hook. Even if the door attempts to come open, it cannot. It's worked for us for years on 2 different campers now. Easy fix, doesn't cost anything if you've got the stuff laying around. Once at the campsite, I use he bungie for other things, primarily to wrap around the end of a picnic table to hold the table cloth down. When leaving, it comes off the table and back on the door. Problem solved. Door never opens.