Common Products May Not Kill Head Licehttp://articles.mercola.com/sites/articles/archive/2008/01/02/products-may-not-kill-head-lice.aspxProducts commonly used to treat head lice may not always be effective in children who become reinfested. Permethrin is the main ingredient in several commonly used head lice products. The investigators found that a certain proportion of the small sampleenCommunityServer 2008.5 SP1 (Build: 31106.3070)