Bears use natural tick repellents

Including beech tar and turpentine:
https://www.nytimes.com/2023/02/01/science/bears-trees-ticks.html

And cats might use catnip as mosquito repellent.
https://www.nytimes.com/2021/01/20/science/catnip-mosquito-repellent.html

Beech tar, turpentine, and catnip might work for humans, too.

Except for the side effects – like attracting bears and mountain lions!

— Rex