Child proof locks any recommendations

[Unintentionallycausingoffence]

I purchased fridge and freezer locks to stop DS who’s nine from helping himself to food from the fridge and freezer. I bought themfrom Clippasafe but more or less as soon as they were on he’d worked out how to unlock them. Any recommendations are there more childproof locks out there?

You can get ones with keys, code or padlock. Like this and this and this.