| 摘要 |
PROBLEM TO BE SOLVED: To provide a termite-preventing agent which is excellent in a termite-preventing performance and has enhanced safety for humans, beasts and environments. SOLUTION: This termite-preventing agent is characterized by containing at least one ecdysteroid selected from the group consisting of ponasterone A, makisterone A and inokosterone as an active ingredient. For example, an extract of a plant belonging to genera Podocarpus and Achyranthes is used. The termite-preventing agent is used as a wood-preserving agent for spraying on the surfaces of woods or for injecting into the woods. COPYRIGHT: (C)2008,JPO&INPIT
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