A vermin repellent arrangement comprises a repellent storage coupled to a first vaporizer adapted to provide a repellent dosage into a first area in response to a repellent control signal. Means for acoustically detecting a vermin in that area provide a first detection signal in response thereto. The means are coupled to evaluation means to receive the first detection signal and adapted to provide the repellent control signal in response to an evaluation of the first detection signal and a reference signal, that reference signal assigned to at least one pre-defined type of vermin.
