Main Insect/Pest Information Page > Fly Control
Flies… Inside
Flies are a real nuisance inside a structure and not easily tolerated. It may be possible that the flies you see are breeding on a dead animal such as a bird or squirrel in a wall, chimney, or attic space. But the most common activity occurs on a warm day when flies are coming out of hibernation (in the walls during the winter). Typically this occurs in early spring, but and unusually warm fall or winter day will also trigger it.
If you care to notice, the flies are a bit slow and sluggish, but they all perform the same habit of congregating by the windows. They bump and buzz up against the glass because they are trying to get out. (they came in – they simply want to get out)!
Preventing flies from getting in, in the first place is probably a futile effort. A building is built to breath and closing up all small openings could result in moisture build up.
Inside control can be achieved with the use of sticky traps and ultraviolet light fly traps. Be aware that the bulbs in these units lose effectiveness month by month and although they look the same, they should be replaced every six (6) months.
Flies …. Outside
Flies outside are typically associated with decaying material (leaf litter, dead animal, garbage). The removal of the source resolves the problem.
There are also various baits both liquid and granular for outside use only. They are effective if applied on a regular basis.
If you are eating on your deck/patio or having an outdoor party, we have organic non-pesticide materials that work quite well.
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infestation problem.