What's Crawling Around in Your Home's Air Ducts?

It’s not fun to think about, but sometimes dust isn’t all that is in your duct system. You might have heard animal noises coming from air ducts and fear you have freeloading visitors. You can try and lure the little guys out but if they’re nesting they may not leave their babies. Call Fras-Air/General Service Experts for a thorough duct cleaning and we will assure your duct system is clear of all these unwelcome house guests, for instance:

Insects and Bugs

Not much is worse than working to kill a spider and watching it run into an air vent. It’s impossible to get it now and all you can do is sit on the couch and imagine it laying all those spider babies. You may even swear you hear some scrambling around your duct system. Fear not. Fras-Air/General Service Experts will come see you and give you a full duct cleaning and ensure that spider and any of her bug friends are good and gone. Babies, too.


When rodents make their way into your duct system, normally through openings in the duct work and cracks in the foundation or home exterior, it causes many issues. First, wildlife can leave droppings behind and can tear up anything they come across, including seasonal decorations or old baby clothes you’re keeping in your attic. Second, rodents tend to chew, which can cause exposed wiring. That mixed with the dried grass and leaves they’re likely carrying in to manufacture a nest, and now you have quite the fire hazard in your attic, behind your walls, and in your duct system. A complete duct cleaning can get rid of rodent droppings or nests, but you may also need to call animal control to remove the rodents and perhaps an electrician if there has been any damage to wiring.


Birds usually find safe and sheltered places to nest, like your air vents. Nests mean babies, which means they are feeding babies, and that means BUGS. If you find birds in your vents, you’ll likely end up with six-legged and eight-legged critters in your home. But that’s not the end of it. Birds assemble nests in your vents, and given the large amount of leaves and grass they use to assemble said nest, it can wind up totally clogging a vent, obstructing any airflow. As with our furry friends, a full duct cleaning from Fras-Air/General Service Experts can get rid of any droppings, feathers, or other possible illness-carrying leave-behinds. You could also need animal control to actually remove the birds from the vents or attics.

Mice in Air Ducts

If you have mice in the ducts, you should take steps quickly to remove them. Mice nibble on wires and leave droppings like most rodents, but they also grow their population quickly. And when they run around in the ducts, treating it like the beltway of your residence, they may die in there. This creates a health hazard, and you may notice an unsavory odor.

You may guess mice due to the noises you hear – some scratching and scrabbling in ductwork. Or you might actually spot one making an escape into the air vents in your house. You could even confirm their status by inspecting the ducts for mice feces. Either way, if you you’re worried you have mice you have some options. You may trap them yourself, by setting traps just inside each duct and checking them in the morning. Or you might decide to hire a specialist.

Once you have determined that the mice are exterminated, you will need to have your air ducts thoroughly cleaned by an HVAC company. If mice have been living in the walls, they will have left mice refuse in your ducts. Mice leavings are toxic, and if you ignore them in your ducts they can make you sick. Fras-Air/General Service Experts offers duct cleaning services that will eliminate most debris from your home’s ventilation system.

Call Fras-Air/General Service Experts now for a complete duct cleaning to help make sure the air you and your loved ones are breathing is healthy and pest-free.

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