I would highly recommend Bat Control Specialist. They are very knowledgeable & professional, answering questions and providing suggestions for us to lim it the flying nocturnal visitors until they could come to bat proof the outside of our house. They worked solidly for the better part of 2 days, sealing up any entries, while still leaving a couple of one way exits for any bats within the attic. They left everything cleaned up & neat after. The result is the first summer with no bats coming in and no more rustling noises from the attic or upper walls. Thank you Bat Control Specialist!