I stopped using TSA locks alltogether and I primarily fly international (origin US). Last time I used one, it was cut off of my bag and the zipper tabs were damaged. I'm not sure where it happened en route, but I think it was done in Hong Kong, but it could have been LAX. I don't put anything valuable in my suitcase. If it has value, I carry it on. That probably does not work for everyone, but it works for me. If they want to dig through my bag, have at it. So far I have only lost a multi-tool, which was about the most valuable thing in there.