pigeon poop

at the cancer house they are having a little issue with pigeons and pigeon fecal matter on the driveway and steps. So I made some little tack strips with nails sticking up and nailed them to the roof. As of this morning, no poop on the stairs but still a little poopoo on the driveway. They are crafty little pigeons and their true hangout has so far eluded me, but I'll find it and the next time they try to squat, there will be a little nail tickling their little anal orifice.