...how to I keep it there? I am having a hard time catching them, and I live in an apartment community so it's difficult to set up any camera, get it powered, and have it high enough quality to SEE who is doing it.

How can I fight back? Any traps for the stickers? Any way to keep them on? Any ideas for catching who is doing it?

It has costs me so far over $50 for how many times it has happened recently, and it is the same person who keeps doing it I'm sure (just don't know who).