They found vinegar was actually the least effective treatment method for getting rid of lice or suppressing the hatching of nits. Vinegar wasn't the only home remedy that didn't do well. No home treatment prevented lice from laying eggs. Even with prolonged exposure, most home remedies were unable to kill nits.

What kills head lice instantly?

Smothering agents: There are several common home products that may kill lice by depriving them of air and smothering them. These products include petroleum jelly (Vaseline), olive oil, butter, or mayonnaise. Any of these products may be applied to the scalp and hair, covered with a shower cap, and left on overnight.

How do you get rid of lice with vinegar?

Apple cider vinegar (½ cup water and ½ cup vinegar, poured over the scalp to make nits easier to comb out) Hair drying to kill nits. Essential oil spray to repel lice and loosen nits (fill spray bottle with 5 drops oil per 1 ounce water) Wash all bedding and clothing.