I was totally perplexed by the law enforcement policy on this. I even had the cops come back out the next day to try to file a report or at least get fingerprints; they spoke to their supervisor, a sergeant, and there’s nothing to be done. One of them literally said, “He could have been coming in to take a nap. There’s no way to know his intent if he didn’t get in.”
They then told me that sometimes people will try the same houses. To which I said, “So, next time he comes back, I should let him in a little.” Yikes is right.
Yes, I put in a request immediately for bars on all of the windows. Luckily, my landlord was horrified, too, and is honoring that request.