Compared to manual compression-type sprayers, this unit offers ten-fold efficiency.  It likewise has less noise, and is easy to carry, and effective in killing insects and disinfection indoors and outdoors.  In particular, since it enables the adjustment of the size of particles, the user can set conditions to obtain a maximum effect according to kinds of chemicals and mixture ratios.  With the use of flexible hose, it makes it feasible to spray to indoor places difficult to access. Under the carpet at the bottom of the sink in the kitchen, upper side of the ceiling, closed ducts, etc.