My very nice delivery driver licked his finger to open every carrier bag when delivering my groceries yesterday. I was so flabbergasted and uncomfortable I did not say a word. He was unthinking, obviously, not malicious. I would like to contact the store anonymously to ask them to remind delivery workers not to do that. Or should I just forget it as lots of unseen spittle is probably all over my groceries anyway? AIBU to express concern to the store?