There is a grapefruit derived extract that is already government approved that not only repels but kills biting insects.
Unfortunately, the way the EPA works is that even if they approve a chemical each individual company formulation has to go through a multi-year process to get labeled.
https://www.cdc.gov/media/releases/2020/...d-epa.html
Unfortunately, the way the EPA works is that even if they approve a chemical each individual company formulation has to go through a multi-year process to get labeled.
https://www.cdc.gov/media/releases/2020/...d-epa.html

