Do you think you are your child has head lice? Do you want to get rid of your head lice? This book can help you with your head lice problem. Several species of insects and related pests feed on people. These pests are called ectoparasites when they feed externally, taking blood from their host. In addition to the irritation caused by their bites, some ectoparasites such as fleas, ticks, and lice may also transmit serious disease-producing organisms.