Some time back there was that dreaded mass of containers in the cupboard...a mish mash of empty food (i.e. cool whip, margarine, take-out) and those sold for storage. With mom's ongoing dementia and my being sick of organizing and getting rid of things without a matching lid, I invested in a lovely set of lock and lock containers, clear bases to help mom be able to see what was inside, colored lids...got two sets in fact. They nest, so I got a nice small clear box, stood them on their sides, nested, with all the lids behind them. These continue to go missing, she has literally broken off the tab (or cut it?) on one. I feel like an idiot calling and asking for replacement lids. She may even have managed to throw one or two out without our knowing. Has anyone dealt with this? Is the answer locks on the cupboard doors?