Luring someone into your open garage to "catch them" is a very bad premise from the start.
When we had thefts from autos in public parking lots, we set out the VARDA car.
We had one empty electronics box in plain view with one of three car doors left unlocked by "mistake". There were a number of ways to trigger the alarm - usually we alarmed the open door. When the perp opened the door, a radio broadcast was made to the area cars. Usually though there was one unmarked watching from a distance away. If a foot chase ensued, which was usual, the perp would drop the box and claim he was innocent. Except we had invisible powder on the box and everywhere the perp touched himself would turn purple. We had some odd looking mugshots of purple faced dudes. It was all pretty humorous and the thefts would subside for awhile.
But trying this at home is not good business.
