US Patent 7218234 Electronic bait station

An electronic bait station utilising the disruption of an electromagnetic field to detect the movement of insects or small animals within the station. The bait station consists of a housing, with at least one cavity having an electromagnetic radiation element generating an electromagnetic field in the cavity, and an electromagnetic receiving element detecting the electromagnetic field. Movement of an insect or small animal in the cavity causes a change in the electromagnetic field, which is detected.