To obtain a heat transpiratory preparation useful as an excellent total release type insect-controlling composition and usable easily even in general household by holding a mothproofing active ingredient in a specific structure.
This heat transpiratory preparation comprises a combustible layer 1 and agent-holding later 2 containing agents such as a mothproofing active ingredient, germicidal active ingredient and perfuming ingredient, and incombustible support holding these ingredients. The incombustible support is e.g. pearlite, diatomaceous earth, white carbon or ceramics. The agent-holding layer 2 is normally 1 to 10mm in thickness and contains 0.1 to 50wt.% active ingredients based on the total weight of the agent-holding layer. Preferably, the combustible layer has such a composition as to combust without flaming, and it is also preferable that the combustible layer consists of a combustible ingredient, co-combustible ingredient and binder.
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