The Daffy Duct crew were called in to clean out our air duct system as well as to find a dead animal that I was CERTAIN was in the ventilation system. The odor in the house was unbearable. They cleaned out our air ducts and did discover an animal that had died in the basement in between the silver ventilation wrap and the pipe. The guys were great and resolved our issue completely...they were inexpensive and I will definitely use them in the future.