That is what we have been doing now and in the past, Pert. It works but you can go back 30 minutes later and there are twice as many in their place. We use our shop vac which has a longer hose and attachments that will reach to the ceiling. I vacuum up some 7 veggie dust into the bag and go to work. When the smell gets too bad I spray a couple of squirts of perfume or pet scent remover like Nature's Miracle down the hose and it pretty well handles the smell. The 7 dust kills them in the bag. When the season ends for them we change out the bags.
@BigBlueHen53 is right. you can go outside and they are hanging on the side of the house, the window screens, flying around under trees. They love the sunlight and seem to be drawn to white siding. Our siding is white metal siding which seems to be what the Amish prefer when they build. This siding has ridges in it so no matter how hard you try you can't seal up all the places where they can get into your house. I shudder to think how many are in the outside walls.
