8 Plants That May Help Deter Mice, Spiders & Insects
Plants can add natural scents that some pests dislike, but they usually aren’t a substitute for sealing entry points, removing food sources, or using appropriate pest control. Evidence for many “pest-repelling plants” is limited, and effects vary by species and environment.
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Peppermint — its strong menthol scent may discourage some insects and rodents nearby.
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Lavender — its fragrance can help deter some flying insects.
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Basil — commonly grown near windows and outdoor areas because its aromatic oils may repel certain insects.
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Rosemary — its strong scent may discourage some insects, particularly around outdoor areas.
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Marigolds — may provide some benefit against certain garden pests, although their effectiveness as a general insect repellent is often overstated.
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Citronella-scented plants — aromatic compounds associated with citronella can repel mosquitoes, but simply growing a citronella plant generally isn’t equivalent to using a tested citronella repellent.
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Catnip — contains nepetalactone, a compound shown to repel some insects; however, catnip can attract cats.
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Sage — its aromatic foliage may discourage some insects, particularly when used around outdoor spaces.
What works better for mice and spiders?
For mice, plants generally aren’t a reliable solution. Seal cracks and gaps, store food in sealed containers, and remove accessible food and nesting material.
For spiders, reducing insects around the home, keeping clutter down, and sealing openings around doors and windows is usually more useful than relying on plants.
If you have children or pets, check whether a particular plant is toxic before bringing it indoors.
