Homs Bite Blocker BioUD Insect Repellent & Clothing Treatment offers protection against ZIKA and is approved by the EPA for protection against mosquitoes and ticks that may transmit West Nile Virus, Lyme Disease, Rocky Mountain Spotted Fever and other insect and tick-borne diseases for up to 4.5 hours. The active ingredient, 2-unecanone, is found in wild tomato plants. DEET Free.