When I bring my plants indoors in late fall, I group them under lights, in a cool room in the basement. I than fill 3 or 4 empty margarine containers with water and space them around the plants on the table. I water the plants very sparingly all winter.
These pesky creatures love water. These margarine containers become their source of water, where they congregate and drown. Keep the containers filled with water to the very top at all times.