Cliff swallows are also known as mud swallows because of the gourd-shaped nest made of mud from a nearby water source. They can be a real problem if they decide to nest under an eave of a house or business. Their droppings can make quite a mess on the side of you home and the area below. The droppings can cause health problems from their droppings. They are busy during the day eating bugs "in flight". They are one of the few birds that eat while flying.
We use the most effective controls for eliminating nesting on your house or building. They cannot be disturbed during the nesting period after the nests are completed. The control methods need to be done in the early spring or wait until the next fall.