Catnip repels insects. Scientists may have finally found out how
The plant triggers a receptor that, in other animals, senses pain and itch
![cat rubbing on a catnip plant](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2021/03/030421_EG_catnip-mosquito_feat.jpg?fit=1030%2C580&ssl=1)
Catnip (Nepeta cataria) may have a euphoric effect on cats, but the plant deters insects by triggering a chemical sensor for irritants, a new study shows.
Turnip Towers/Alamy Stock Photo