I don't want one for hunting, I need one to catch a sneaky neighbor who's been vandalizing my property. I've been looking at the Moultrie game spy A-5 2pack for $109 on flea bay. Okay, how do they work? Pick up movement and take a pic? From what I've read they need a card? What's the range they pick up movement and how fast do they fire? I've never messed with one before and know nothing about them. Any recommendations would be appreciated.