Are There Any Other Ways To Kill Lice And Nits Besides The Shampoo?

My child has lice and school on Monday and shampoo doesn't work so well so is there any other things that we can use to get rid of it someone I know who used mouth wash but im not sure if it works please help.

What Can You Get In Commercial Shampoo And Natural Shampoo That Can Kill Head Lice??

treatments for head lice