Lice EggsHead lice depend on human heads for warmth and food. They need about five blood meals each day. Head lice can lay six to eight eggs a day. The eggs are cemented to the hair shaft close to the scalp. Head lice live only about 30 days. When removed from the head they die in 1 or 2 days. The lice eggs die soon after being removed from the warm scalp. Head lice do not fly. Pets don't get head lice.