Today, I found out that someone went and loosened the valve stem on one of my van tires, resulting in a slow leak. They may have also done so to the tire on our pop-up trailer, but we'd need to reinflate that one in order to find out, since it's gone completely flat.
Needless to say, I'm furious, since this could have resulted in someone (myself, my husband or our roommates) ending up with a blowout - possibly even with my daughter in the car.
I want to know if a) there's a way to 'lock' this vulnerability, like they have gas-tank locks, or b) if there's a way to catch the perp in the act. I've considered putting some kind of substance on the valve stem that would stain the fingers, but it would have to be something that wouldn't dry up overnight.