Mint essential oils, such as peppermint and spearmint, are effective deterrents for many varieties of insects. It is one of the most effective essential oils and repels most insects. A few drops of peppermint oil can discourage ants, aphids, beetles, fleas, flies, gnats, lice, mosquitoes and moths.
I use several small humidifiers in the rooms that house a good few of my plants. While I use them as humidifiers, they also double as essential oil diffusers. I have several oils (peppermint, tea tree, lemongrass) that I'd like to start using, but I'm afraid they might harm my plants.
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