To provide an attachment easy to suck a mosquito, a fly, a spider, a cockroach or the like and to treat it after sucking and capable of being used as well for dust collection of corners of the ceiling or a room and near wall faces where a conventional attachment insufficiently collects dust.

The exchange attachment has a funnel-shaped suction opening for easy suction of the mosquito, the fly, the spider, the cockroach or the like. The suction opening of a funnel end face is formed into a circle or an approximate rectangle to be easily brought into contact with the corners of the ceiling or the room and the wall faces. An angle between the perpendicular line of the funnel end face and an insertion opening consists of a user-friendly angle ranging from that except perpendicularity (0°) to 90°. The funnel end face has shallow unevenness or short fillings, making itself not too much vacuously sucked onto the ceiling or the floor face not to be hardly conducted for sucking. After a finish of sucking the mosquito, the fly, the spider, the cockroach or the like, basically a vacuum cleaner is reactivated, unnecessary in the case of the mosquito, to suck a home spray insecticide from the suction opening for several seconds to have insecticidal treatment inside the cleaner.