Anyone here done this to someone?

we had an oil changer at the dealer who liked to play jokes. one day he decided to anti seize the drawers on my tool box. we all had a little chuckle I told him not to do it again. ( cleaning that mess up takes longer than you think ) luckily it was a slow day so I didn't loose any money cleaning up the mess. about a week later he did it again.
not so lucky I got that crap on the leather of a brand new car. needless to say I wasted a lot of time cleaning up what was now my mess. he came in to find his tool box upside down........ he Never messed with any of our stuff again.