Good call. We actually leave ours unlocked and take the valuables home...figure if they want in, they will just break something if it is locked and cost more money. Not much worse than a thief.

Are you leaving a Travel Trailer unlocked or something else?

Like others, the best thing to do is leave it unlocked with nothing of real value left behind. One lease I was on for quite a few years, our camp was right off a fairly busy blacktop (maybe 150 yards or so) and easily visible and accessible from the highway for anyone willing to hop the fence. We had a couple of trailers and an old farm house that some used for a bunkhouse and also a place to hang out and watch a movie or a football game. We never left any guns or anything of real value, but always had a TV, VCR/DVD, sleeping bags and some would leave some of their hunting gear, i.e., coveralls or hunting boots, etc. For awhile we put a padlock on the door until we thought about it and thought if anyone wanted in, all they had to do was bust the window.

Oddly enough we never once had any instance of anything stolen or coming up missing.