A device for emitting two or more volatile compositions, said device comprising a housing and a plug connected at least indirectly to said housing, to support the housing on an electrical outlet, and said housing contains receptacles for said volatile compositions, wherein said two or more volatile compositions comprise a first volatile composition, a second volatile composition, and optionally additional volatile compositions, characterized in that said device is configured to emit said additional first, second and optional volatile compositions in a continuous repeat emission sequence, in which the emission of the different volatile compositions automatically alternates between the different volatile compositions in the sequence and where in said repetitive alternating sequence: (a) the volatile compositions are emitted so that one follows immediately at the end of the period d and issuance of the preceding composition, or (b) volatile compositions are issued such that there is a period of time between the end of the period of emission of a volatile composition and the beginning of the period of emission of the next volatile composition, and comprises additionally a timer mechanism that is configured such that said volatile compositions are each emitted alternately during discrete periods that are each greater than 15 minutes and less than or equal to 48 hours.Un dispositivo para emitir dos o más composiciones volátiles, comprendiendo dicho dispositivo una carcasa y un enchufe unido al menos indirectamente a dicha carcasa, para soportar la carcasa sobre una toma de corriente eléctrica, y dicha carcasa contiene receptáculos para dichas composiciones volátiles, en donde dichas dos o más composiciones volátiles comprenden una primera composición volátil, una segunda composición volátil, y opcionalmente composiciones volátiles adicionales, caracterizado por que dicho dispositivo está configurado para emitir dichas composiciones volátiles primera, segunda y opcional ad