They have put boxes of mine in those lockers that would have fit in my PO Box. There has been nothing come of it at all. It has been boxes from the same company that they normally just put in my PO Box. I think it just depends on who is putting the mail in the boxes that particular day.

I think you are being paranoid about nothing.

As far as being a "vet", I've been ordering for years and using a PO Box.