Abstract: Food handling facilities such as meat packing, plants, dairies, kitchens and the like are disinfected using a disinfecting atmosphere which includes ozone and hydrogen peroxide, at a relative humidity of at least 60%.

Abstract: A deratization system includes a plurality of remote terminals provided with vibrating apparatus, the remote terminals being controlled by a central transmitting unit. High frequency signals generated by the central transmitting unit are sent through the existing electrical net of a building to the remote terminals using the technique of simultaneously conveyed frequencies. A signal energizes all terminals or just a number of preselected terminals. In turn the remote terminals are sending in case of malfunction an error signal to the central transmitting unit.