My research shows boric acid is roughly as toxic as table salt. If so, how can it kill pests?
• Boric acid attaches to the bodies of the pests as they crawl through or nest in the insulation. Since these pests are “self-grooming” insects, they ingest the boric acid when they groom themselves. As the pests cannot excrete the boric acid, it accumulates in the gut, eventually proving lethal due to dehydration, malnutrition, or both.
