hehe that is too funny. I can picture them huddled in a corner mapping out where to strategically sneak across the room, one by one, single file, looking around to make sure you don't notice, if you they casually pretend to sniff around til you look away then they scurry to your bag, if they could they'd be wearing all black and have the Mission Impossible theme playing...
Next time you should record them in the act send to to Animal Planet and show us it too!