The FBS -1 Fly Bait Station is awesome to combat those terrible fly issues! This fly bait station has a durable hinge design for extended reliability. You can mount this fly bait station to almost anywhere…walls, fences, stakes, poles, etc.. How does it work? Open the lid, place some liquid or granular fly bait in the trays. Close the lid. The vents on the top of the station are specifically designed to allow flies into station, while protecting bait from wind, rain, & other elements.