Abstract: A dirt sensor comprising a dirt collecting surface exposed to allow dirt from the environment to build-up on the dirt collecting surface, and a transducer located in relation to the dirt collecting surface and responsive to dirt thereon to provide an output of the sensor dependent on the amount of dirt built-up on the dirt collecting surface.

Abstract: A bait station for pest control is provided that comprises an enclosure. The enclosure defines an access chamber that includes an entry port for entry of a pest therein, and a bait chamber that holds a bait product harmful to a pest. A partition section separates the access chamber and the bait chamber. A closure element is associated with the access port and is moveable between a first position covering the access port, and a second position exposing the access port. A detector arrangement outputs a signal indicative of presence or otherwise of a pest in the access chamber. A controller receives the signal and records a pest activity event. The controller moves the closure element to the second position to open an access port between the access chamber and the bait chamber when a number of recorded pest activity events are at least equal to a predetermined number.

Abstract: A bait station for pest control is provided that comprises an enclosure. The enclosure defines an access chamber that includes an entry port for entry of a pest therein, and a bait chamber that holds a bait product harmful to a pest. A partition section separates the access chamber and the bait chamber. A closure element is associated with the access port and is moveable between a first position covering the access port, and a second position exposing the access port. A detector arrangement outputs a signal indicative of presence or otherwise of a pest in the access chamber. A controller receives the signal and records a pest activity event. The controller moves the closure element to the second position to open an access port between the access chamber and the bait chamber when a number of recorded pest activity events are at least equal to a predetermined number.