I bought an $80 pigeon trap with bobs on both ends. I put it in a parking garage where the owner was asking me to get rid of his pigeons (I have a loft built and am ready to re-home 6-8...but I'm not having luck). I had one pigeon in after a few days, decided to leave it so it's friends would come join...and the next morning it was gone. Pigeons kept going in, eating the food, and leaving at will. I'm new to this, but the bob thing seems to really not work at all. any advice would be greatly appreciated!!