While it’s fairly common for homeowners to discover a rat, mouse, or other rodent has died in their HVAC duct, it’s not a pleasant experience in the slightest.
Often, it will leave you with a really bad odor and mess to clean up. Even though the critter died in your HVAC duct, the odor will probably seep into your property and cause your entire place to have a bad odor. While it’s best to have this type of situation handled by a professional, there are some things you can do in the event a small critter dies in your HVAC duct. The only way to know where a critter died in your basement, attic, crawlspace, or HVAC duct is to follow the scent; If you can visually see the critter, you can carry on with removing it. If you do not see it immediately, you may need to consider hiring a professional to search for the critter to remove it… Animals often crawl into nooks or dark corners, or even into the insulation to die, making it pretty hard to find. Once it’s been found and removed, you should disinfect the section to get rid of the odor and clean the area immediately. One thing you should do after all of this is to have an official inspection of your system and HVAC duct to know how the critter was able to enter your HVAC duct in the first place. It’s really important to find the entrance to your HVAC duct to prevent another critter from getting into the HVAC duct. Also, this will increase efficiency of your system, however you may also want to consider having your ducts professionally cleaned. Though this issue could be fixed on your own, you can see why it may be useful and even necessary to hire a professional to come in and assist you with the problem.