I have a private parking spot I'm renting which is visibly declared as such, but people keep illegaly parking there. I'm thinking about putting a letter onto their windshield telling them to stop parking on my spot, otherwise I'll be dropping cease and desist letters. I want the world to be a happy place and don't want to be an asshole but damn this is annoying and bothersome. I've rented the place here with a parking spot and if they haven't, thats not my issue really.