| 摘要 |
PROBLEM TO BE SOLVED: To reduce damages of boring insect pests such as Lyctus brunneus, etc. SOLUTION: A mixture obtained by mixing a bait (comprising 26% of wood flour of lauan sapwood, 24% of beer yeast and 50% of starch) being a favorite of Lyctus brunneus, etc., with water in the ratio of water to the bait of 70% to 30% is arranged on a part or the whole surface of the surface, the back or both sides of a plate material (sapwood having a high starch content) or a cardboard, etc. Lyctus brunneus is attracted by the plate material, eggs of Lyctus brunneus are laid on the plate material so that the next egg laying on a wood part of a building main body is prevented and an expansion of damages of Lyctus brunneus is prevented.
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