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How do I get rid of gnats in air vents? We have had gnats in our house for months now. Our exterminator has sprayed and fogged and is amazed by the number of dead bugs that gather on our window sills. After much investigating, we've discovered that the gnats are living in our vent system. They must be breeding down there. We've purchased felt vent covers as a temporary measure and are considering hiring a service to clean out the vents. Does anyone know if this will work? Why are the gnats living down there? These vents are under a slab and it is possible that there is a crack and some dirt got in--leaving a breeding ground for these bugs. If anyone out there has any ideas, it would be greatly appreciated. I can't stand living with these bugs anymore. Maintenance & Repairs - 2 Answers - 2007-10-11 16:55:17 Best Answer You say the ducts are under the concrete slab. If this is correct your ducts have moisture in the low spots that just sits there and breeds insects. Only thing I can think to do is have the ducts cleaned by a hvac company. If that's the problem it will happen again so have them cleaned often or have the duct work rerouted up the walls and thru the attic. All Answers Answer 1 i know but i'd like to. and why are they coming out now? aren't they like spring creatures?any good answers. 2007-10-11 17:06:15 Answer 2 You say the ducts are under the concrete slab. If this is correct your ducts have moisture in the low spots that just sits there and breeds insects. Only thing I can think to do is have the ducts cleaned by a hvac company. If that's the problem it will happen again so have them cleaned often or have the duct work rerouted up the walls and thru the attic. 2007-10-11 18:41:57 |