True or False: In most cases, residual sprays provide effective control of wood-boring beetle infestations.

Residual sprays are indeed effective in controlling wood-boring beetle infestations in most cases. These products are designed to adhere to the surface of the wood and continue to provide a long-lasting barrier against pests. When applied correctly, residual sprays can penetrate the wood to some extent, targeting larvae as they develop or emerge. This method is particularly useful in managing infestations in existing structures, as the residual effects can help prevent re-infestation and provide ongoing protection.

While there may be factors that influence the efficacy of residual sprays, such as the specific species of wood-boring beetle, the condition of the wood, and the application technique, the general effectiveness of these sprays is recognized in the pest control industry. Therefore, the statement holds true as it reflects the practical application of pest management strategies for wood-boring beetles.