Up to 8hr protection from mosquitoes midges amp biting insectsinsect repellent factor 3pump spray with oil from lemon eucalyptus trees for natural protectionthe insect repellent factor174 is a quick and easy way to choose what repellent you need to protect yourself from mosquitoes midges and other biting insects the higher the irf174 the better the protection also available in sensitive skin irf2 medium irf3 and maximum irf4