If you want to protect yourself from mosquitoes and ticks—which seem to be everywhere this year—you might need to enlist a heavy-hitter. Insect experts reach for one thing: permethrin. Here’s what to ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. If you’re grossed out ...