Why shouldn't you spray termites?

You should not spray termites with over-the-counter repellent sprays because it often makes the problem worse by causing termites to scatter and create new colonies rather than eliminating the entire colony, which can have millions of members. Subterranean termites live in large underground nests and build mud tubes to reach wood, so when you spray visible termites with a repellent insecticide like Raid, you may kill a few foragers on the surface but the majority including the queen remain hidden underground and will detect the chemical and avoid the treated area, splitting into satellite colonies that infest other parts of your home and making professional treatment more difficult and expensive. This budding effect means you turn one colony into several. Additionally, many household sprays are repellent rather than non-repellent, so they do not transfer back to the colony, whereas professional non-repellent termiticides containing fipronil are designed to be undetectable and carried back on termites' bodies to spread through grooming. Spraying can also contaminate wood and soil, interfere with professional bait systems, damage finishes, and give false security while structural damage continues unseen for months. For drywood termites inside wood, spraying the surface does not penetrate galleries where they live. The recommended approach is not to disturb them, avoid spraying, fix moisture issues, and contact a licensed pest control company for inspection and proper treatment using liquid barriers or bait systems that eliminate the entire colony within 30 to 90 days.