Now that summer is here some of us may be faced with a fly getting into
the house from time to time.
After wasting a lot of time trying to chase one down to swat it...
I realized they are photo-tropic creatures and they will typically go
back to the place where they came in within a few minutes.
What I do now is simply give them a few minutes and most of the time
they will return to the door where they entered...and I just open it an
let them out.
If it's evening and there are lights on in the house...turn them off.