The black bugs are now at plague proportions (okay maybe a slight exaggeration

) and driving us insane. They are all around the outside of the house - flying around the eaves. So I pulled out the heavy duty Mortein and sprayed the eaves, windows and doors - twice. And yet we continued to have swarms of these critters flying inside.
So yesterday I decide on another strategy. Perhaps they are coming up through the drains. I placed containers over all the floor wastes and plugs in all the sinks. The population dropped from an annoying level to an occasional swipe. DH feels there is no way they are coming through the sinks - I'm not so sure, they are clever little things. Anyway, today I have unplugged the kitchen sinks to test his theory. So far only 1 black bug has been spotted

. Tomorrow I will unplug the bathroom sinks too.
But the question is- if they are coming in through the drains- how on earth am I going to get rid of them? I can't leave plastic containers over all the floor wastes for you to step over in the laundry and the bathrooms

.