UNIT + 240ML REFILL. DOOM AUTOMATIC INDOOR INSECT CONTROL SYSTEM IS A SCIENTIFICALLY PROVEN METHOD TO KILL FLYING AND CRAWLING INSECTS THAT LEAVES YOUR HOME CLEAN AND FRESH. THIS AUTOMATIC SYSTEM FROM DOOM KEEPS THE ROOM FREE OF INSECTS BY SPRAYING THE ANTI INSECT SPRAY AT REGULAR INTERVALS AUTOMATICALLY TO GIVE YOU A CLEAN INSECT FREE ATMOSPHERE.