A pest control system (20) includes pest control devices (110) installed about an area or building (22). These devices (110) each include a bait member and a communication circuit. The communication circuit may be in the form of a passive RF tag that transmits information indicative of bait status and...http://www.google.com/patents/US20030001745?utm_source=gb-gplus-sharePatent US20030001745 - Sensing devices, systems, and methods particularly for pest control