I had an air filter go missing

This is a unusual situation to be and I had an air filter going missing.

This one unique air filter that I have in my heat and AC store regularly seems to disappear.

It’s the strangest thing I don’t know how it’s happening but it’s causing frustration among my customers because they want to buy these air filters and they don’t have access to them. These are some washable air filters that I have been stalking my heating and AC store with. I do it I regularly do and I order a supply of them and after that I add them to the shelf. All the heating and AC supplies that I order I stock in the back room. Then myself and with the help of some employees my wonderful friend and I stock the shelves in the heating and AC store with all the supplies, lately I have had an issue of there being washable air filters completely disappearing from the storage room. I have reviewed the security footage and I haven’t found anything strangeā€¦ Nobody is stealing them, in fact I often times there isn’teven anybody in the store when they seemingly disappear. The footage shows them there and then the next day they were just gone. I can’t explain it, it’s the weirdest thing. The only time I don’t disappear is when I go and right away stock them on the shelf so that’s what I have been doing. As soon as I get them in I add them to the shelves and the customers have been romantic them.