To obtain an insecticidal incense stick that can develop higher insecticidal effect with a reduced amount in comparison with the conventional insecticidal incense produced by kneading the insecticidal component therein, can readily dissolve the active ingredient in the production, can be readily dried without anxiety of fire and can make the deposition of the insecticidal component on individual incense products uniform.

This insecticidal incense is produced by spraying the incense base with an aqueous emulsion or solution containing the insecticidal component. This incense is produced by spraying an aqueous emulsion or solution of the insecticidal component on the incense base material. The amount of the insecticidal component to be sprayed to the incense base is 0.1-5.0g/sheet. In addition, the aqueous emulsion or solution may contain a mildew-proofing agent. The spray treatment composition of this incense is a formulation of the insecticidal component in an aqueous emulsion or solution, and may contain a mildew- proofing agent, when necessary.