Ok so this morning I noticed 3 or 4 house flys flying around my lights. I zapped a couple of them but was trying to figure out why they were in there. They are normal black house flys. Anyone ever have that issue?
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if you use molasses that could be the attractor
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time of year…as we head towards fall, late fall, flies try to get a last minute go at it for next seasons fry. They will seek warmth and can sense CO2. The average housefly only lives 3 days but if you have a problem, fly paper works great
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I’d twist a piece of duct tape and hang it out of the way as a fly trap.
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Couple extra strips and some vigilant zapper usage seems to have gotten em gone 
Flies in houses is normal.