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How to Protect Against West Nile
The EPA has identified four EPA-registered products that provide enough protection to help prevent bites from WNV-carrying insects, and it deems each of these ingredients safe for children. The higher the concentration of an active ingredient, the longer the protection lasts. However, the CDC has found that concentrations higher than 30 percent do not offer a marked increase in protection time, and lower concentrations are typically safer for kids.