A device for controlling at least one insect bait station (100), in particular for insects harmful to humans, animals and plants, in which the bait station is provided with: at least one container (3, 5) provided with an insect entrance opening, the container containing bait and being at least partially transparent or translucent, a lighting device (10) lighting the inside of the container but located outside same, a telecommunication module (23, 25) and a printed circuit comprising, inter alia, a memory and a processor connected to said telecommunication means. The device comprises an optical sensor essentially opposite the lighting device, and connected to the printed circuit (12), which measures the general opacity caused by the insect(s) in the container, the corresponding value being transmitted for processing and analysis of the status of the bait station.
