The permethrin insecticide should be reapplied following the label instructions. Some commercial products are available pretreated with permethrin.

The use of permethrin, an insecticide, to spray or impregnate clothing is highly ... Always follow the recommendations on the product label. Use enough repellent to cover exposed skin or clothing.

This insecticide can help prevent some mosquito ... give you a good idea of how much to use. For example, the label on Sawyer’s permethrin aerosol spray says that a 4.5-ounce bottle will treat ...