Head lice affect more than 100 million people worldwide annually. Permethrin (1% formulation) is efficacious but resistance is emerging. Malathion (0.5% formulation) is an alternative, but ...

(Higher concentrations of permethrin are used in medications for treating both head lice and scabies ... s permethrin aerosol spray says that a 4.5-ounce bottle will treat a shirt, a pair ...

and repel biting lice in dogs and puppies. Provecta Advanced for Dogs can be used by dogs and puppies at least 7 weeks old and that weigh at least 5 pounds (2.2 kilograms). Permethrin is toxic ...

Only after the operculum (the opening the nymphal louse emerges from) begins to open (4–5 ... permethrin, pyrethrin, or malathion. These therapies have been the first line of treatment for head ...

With each round of research, Yoon and his team noted that lice are getting more and more resistant to permethrin. In their latest study, published last year in the Journal of Medical Entomology ...