The piezoelectric chemical-liquid atomizer apparatus including a chemical liquid vessel detachably housed in the atomizer apparatus, and a wick for supplying a chemical liquid therethrough to a piezoelectric atomizing head arranged in the atomizer apparatus, characterized in that the wick is divided into a first chemical-liquid passage portion and a second chemical-liquid passage portion, wherein (a) the first chemical-liquid passage portion is arranged within the chemical liquid vessel, one end thereof contacting the chemical liquid and the other end thereof being abutted against one end of the second chemical-liquid passage portion and (b) the second chemical-liquid passage portion is arranged at a position where the other end thereof slightly touches the piezoelectric atomizing head or a position where the other end thereof contacts the piezoelectric atomizing head, thereby allowing the chemical liquid to be supplied up to the piezoelectric atomizing head through the first chemical-liquid passage portion and the second chemical-liquid passage portion. The above piezoelectric chemical-liquid atomizer apparatus is highly useful for a method for repelling and eliminating a harmful organism.
