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DIY Neem Spray
Much like lemon eucalyptus, neem oil is known to contain compounds that insects heartily dislike. That means you can use it as an effective repellent.
It is derived from evergreen neem trees, which are native to India and known for potent fruits and seeds. Add a couple tablespoons of the oil into your witch hazel spray and try it out. If the spray isn’t mixing well even when you shake it, you can also add a little vegetable glycerin (a.k.a glycerol, a clear, odorless liquid typically made from palm, soy or coconut oil) to help the ingredients combine.
Neem oil works best when combined with more fragrant oils.
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Try a Peppermint and Castor Oil Combo
Peppermint and castor oil are also both well-regarded as repellents. Plus, the peppermint smells great. But go easy on the peppermint oil at first, as it can be surprisingly potent compared to other essential oils.
