Which of the following is a key advantage of borate products in pest control?

Borate products are well-regarded in pest control primarily due to their extended lifespan in wood, making option B the key advantage. When borates are applied to wooden structures, they penetrate the material and remain effective against wood-destroying pests such as termites and beetles over a long period. This long-lasting effect is particularly beneficial in protecting wood from decay, thereby preserving the structural integrity of buildings.

Other aspects of borates, such as their quick dissolution in water, low toxicity to humans, and effectiveness against pests, may be features of certain formulations, but they do not represent the primary advantage that distinguishes borates in the long-term management of wood pests. In fact, while they can be non-toxic to humans when applied correctly, properties like a rapid action against pests are generally not considered among the main selling points, as borates tend to act more slowly but persistently, which is invaluable in a strategic pest control approach.