What do lice eat?
Lice eat tiny amounts of blood (much less than a mosquito does) for their nourishment and use their sticky little feet to hold on to hair. Gross! When lice start living in hair, they also start to lay eggs, or nits. Lice can survive up to 30 days on a person's head and can lay eight eggs a day. What do lice feed off of? Head lice feed on blood from the scalp.