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本帖最后由 liaotang 于 2015-9-22 21:44 编辑
师傅, 这个严重吗?
pest inspector 说是borer 吃的, 没事。
装修浴室是发现很多粉粉的东西。( 没有拍照, 但同网上的照片很像)
这是我找到的因为资料:
LYCTUS BORER- LYCTUS BRUNNEUS (SAPWOOD BORER) – LIFE CYCLE 1 – 3 YEARS
Lyctus2_2
Lyctus borer floor joist
Lyctus borer damage is often found on the edge of timber framing, skirtings and architraves. The holes are pinhole size (very small) and the powder (frass) is very fine, almost like a timber coloured talcum powder. This borer rarely attacks pines but is commonly found during renovations when wall framing is exposed, often by the electrician when re-wiring in the roof space; in timber tile battens when replacing roofs or lifting roof tiles, and in subfloor timbers such as floor bearers and floor joists when restumping.
Exopest follows the CSIRO advice and does not recommend treatment for Lyctus borer, since the damage to timbers is generally decorative and non-structural. The borer lives off the starch in the sapwood. When the starch has all gone, so has the borer. Lyctus borer mostly infest timber during the first 12 mths of its service life. More information on borers can be found on the “download fact sheet” to the left.
A tree consists of a centre core of wood known as heartwood; a thinner layer known as sapwood, which is located just beneath the bark. When timber is milled, up to 25% sapwood can be present within that timber, and since 75% of the effected piece is heartwood, it remains structurally sound, free from lyctus borer and is not considered necessary to treat. |
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