I don't know about your place at the moment but as soon as we open the door in come the blow flys.
We've had so many that I've had enough. They drive me nuts and the dogs are scared of them. Not to mention that they turn each and every windowsill into a fly graveyard.
So I've had enough of just using this
and I hate anyone using this, especially the males, none of whom know when enough is enough.
So this morning I headed off to the local hardware shop and upgraded my arsenal...
A bug zapper for the back door and
a bug catcher for inside.
Of course we haven't had one fly since I turned them on so I suppose you could say they work.