This story might make you laugh: Over the weekend my garage door was vandalized. Someone wrote "shut your dog up" in permanent marker. Mortified that my dog had been a nuisance (first complaint we've heard in about ten years), I checked with a few neighbors to see how bad. All claimed not to notice him. One told me of the new college student tenant across the alley confronting him about his dog. That, and the timing of how new the tenant was gave me a strong suspect. Still, I couldn't be certain. What to do?
Not wanting to act in anger or do anything to an innocent party, I waited a few days. Then I took a sheet of paper and typed in 12pt font, middle of the page:
I left it on his car windshield. If he didn't do it, no harm done. If he did, message sent. I know you did it.
Should be interesting to see if anything else happens.