Avoid outdoor activity in the early morning and evening hours. Wear long sleeves and pants and use an insect repellent that has been registered with the U.S. Environmental Protection Agency (EPA). The Center for Disease Control (CDC) recommends products with either DEET (N,N-diethyl-m-toluamide) or picaridin (KBR 3023) as the active ingredients. Products with oil of lemon eucalyptus (p-menthane 3, 8-diol) have also been demonstrated to provide protection similar to low concentrations of DEET.