Lifehacker | Make an Effective DIY Mosquito Repellent With Lemon Eucalyptus Oil Lifehacker All you need is lemon eucalyptus oil, vanilla extract, and some witch hazel. The menthoglycol in the lemon eucalyptus oil has been shown to be almost as effective as DEET at repelling mosquitoes, the witch hazel acts as an emulsifier, and the vanilla ... |