Last week was a real doozy. Something must have died somewhere in the attic (we never smelled anything) because on Monday we were overwhelmed by flies in the house. They were located in the living room and kitchen; attracted to the large windows in those rooms.
We tried spraying with a less toxic flying insect spray, but that didn't keep up with them. So then we tried a sticky trap which worked, but not real well.
Finally after much online research I went out to buy what ended up being a wonderful product.
It costs $3.98 for two decals which you place on your windows. They can't be used where pets or children might touch them. Once they are applied they last 7 months inside or 3 months outside.
They are a contact poison with an attractant. They work so well that within a day the number of flies were drastically reduced and the ones I see now are dead. Once the insect touches the decal they die within 1 minute.
This is what they look like:
Basically, a semi transparent square.
I thought I would share this with you, even if it is a disgusting subject. Someone out there may find it helpful.