I know what you mean. We have Phoebes (old timers call the peewees) that have nested under our porch for years. Various fake owls and those big scare-eyes balloons have discouraged them but they just move around to the back of the house. The droppings are all over the porch railings and down the walls which in a log cabin is a real hassle. Wish they would move to the barn or the garage but they just love the cabin.