Protection of Wool Products from Insect Damage by Blending Untreated and Insectproofed Wool

Berber‐style products, containing significant amounts of undyed wool, have been found to be protected from insect attack when the untreated wool is blended with wool treated with sufficient insectproofing agent to give 1. 5 times the recommended application level, based on the total wool content. Best protection is obtained if the untreated and treated wool fibres are intimately blended. Adequate protection, in some instances, can be obtained by treating individual yarns. In this case the spatial distribution of the treated wool and untreated wool in the final product is important.