One company is proposing to treat our framework, yet apparently healthy, because there would be an "epidemic" of capricorn in the area. What do you think?
A house can not be threatened by an "epidemic" of Capricorns! This kind of argument is used to scare you.
Capricorns are not like grasshoppers that would pass from one house to another to invade the frame! Their larvae take years (up to ten years) to weaken a frame.
When a capricorn attack is suspected (parallel galleries on the wood surface, oval exit holes 8 mm in diameter, larva 2 to 3 mm long), consult a recognized company using CTBA + products.