Today I came into work and sat down in my cube and habitually immediately reached for my coffee cup. I know I cleaned it last night because I always do. I thought I've noticed before that my cup has a residue in it that wasn't there when I left, but this time I know fo a fact some &^@hole has been using my cup at night. I suspect the night cleaning crew. We're a small company and don't hav e a formal security group to report this to. I hate to have to say anything to the cleaning company in case it isn't one of their people.
Any ideas as to how to determine with certainty who's doing this? Assume that DNA testing and hidden video cameras are out of the question.
Your inputs would be appreciated. This could be fun while netting a scumbag.
Loren - Cinci, OH