Eli5- similar to pet flea treatments, why can’t they invent a monthly drop for the back of human necks to combat lice?

Question

Eli5- similar to pet flea treatments, why can’t they invent a monthly drop for the back of human necks to combat lice?

In: 3

Answer 1

There’s no need. Lice isn’t that prevalent, especially if you take precautions (basic, regular hygiene). Beyond that, if you do catch lice, you can pretty much get rid of it easily enough