About a year ago, a neighbor of mine and I leased a small house. Although the area is nothing fancy, it’s good having the benefits of a whole house to ourselves. We have access to a garage for our cars, a backyard, and two full powder rooms. There’s a huge kitchen, plenty of closetspace, and we’re located within walking distance of our works. Unfortunately, the house is old, and when all of us first moved in, it smelled horribly of dead mouse. At first, our roommate and I expected to find a dead rodent in a closet, behind the refrigerator, or under the couch. We cleaned that house from top to bottom, scrubbing every surface with chemical, and couldn’t get rid of the smell. We then understood that the smell got worse every time the air conditioner started up. We decided to go without air conditioner and suffered through a hot and humid Summer. We opened windows, ran box fans and sweated (very much). Once the weather cooled down, all of us closed the windows, started up the heating plan and once again smelled like rotting rodent. At that point, all of us called the property owner and complained. He sent an Heating, (fresh air/machines that bring fresh air), and A/C specialist to inspect the heating and cooling system. The specialist informed us that mice were using the air duct as a walkway, dying inside and contaminating our air quality. He needed to complete duct sealing and cleaning to eliminate the buildup of contaminants and eliminate energy waste. Sealing the holes in the ducts prevented new mice from getting inside and greatly increased ability of the heating and cooling system. Plus, our air smelled a whole lot better, felt fresher, and the house was far more comfortable.