I lived in the same apartment for 17 years here in southern california, aside from when we asked them to put in new carpet, put some new paint up, or fix this or that, they never came in our house. Just change your deadbolt if youre worried, if they ask why you changed it, ask why they were trying to get into your house. If they knock when youre home, dont answer, thatll give you time to relocate whatever you need to for the time being. Honestly I wouldnt trip out too much, like I said, socal city for 17 years, they never came, now im in a condo, soooooo much better:thumbsup: