Sawyer Products Premium Insect Repellent with 20% Picaridin 3-Ounce Pump Spray (2) Effective against the Yellow Fever Mosquito, which can transmit the Zika Virus. Long-lasting topical insect repellent with 20 percent Picaridin -- more effective at repelling biting flies than DEET Spray is effective up to 12 hours against mosquitoes and ticks (14 hours for lotion); up to 8 hours against biting flies, gnats, chiggers, and sand flies Safe to use on the whole family; won't harm clothing, backpacks, fishing line, firearm finishes, watches, sunglasses, or other synthetic fabrics; color of bottle may vary