Today we completed our quarterly pest inspection and treatment services. We went around the house and knocked down cobwebs and spiderwebs were refreshing the exterior rodent bait stations, which should moderate signs of rodent activity. The sounds coming from the dryer vent was more than likely a bird. We treated the exterior foundation of your home with a liquid residual to help prevent ants and general seasonal pests. Give this treatment up to two weeks to take full effect as this treatment will agitate insects. Please contact us with any questions or concerns. Thank you for choosing Green pest solutions