sitting here with a can of fly spray ready to zap anything that comes near me,was thinking before all these cans and fancy gadgets came into production what did you use to get rid of flys,i remember we used to fill a jam jar with water to catch the bee's what did you use???
I have bought a device that resembles a tennis racquet. It is fitted with a battery which electrocutes the pesky insect when you swat it.
Very useful in the garden or when camping.
Flies only survive in houses when they have access to water, either prevent them fom coming in or give them no reason to stay. Here in rural SW France we have fly screens on the windows and doors that we leave open for ventilation, we probably get about 1 fly finding it's way in per day. Resident spiders are quite effective too.