This drug is considered one of the most effective insectoacaricides in terms of its effect on pests when used on a large scale, and is effective against wintering pests in orchards and their subsequent generations. The paraffin oil contained in the drug spreads evenly over the surface of the applied plant and enters the respiratory tract of the pest and clogs the respiratory tract. When used against shields, false shields, pear sap, Comstock worm, bloodworm and similar armored pests found in orchards, vineyards and ornamental trees, the drug blocks the exchange of substances and air in their eggs or bodies, forming a solid shell. Thus, the pests suffocate and die.