Seven scents that repel mosquitoes

Updated on: May 28, 2026

Quick overview

• Seven common scents are known to deter mosquitoes
• Mosquitoes navigate largely by smell; certain plant-based scents can help keep them away
• Natural scents can help reduce mosquito activity, but professional treatment is more reliable
• It's the oil inside the plant that does the work, so crush the leaves before applying

Mosquitoes are remarkably good at finding you; they can detect a human from up to 38 yards away. But nature has a few tricks that work against them. There are certain smells that repel mosquitoes, and many come from plants and herbs you can grow right in your own backyard.

It's the oils in these plants that mosquitoes hate, not just the plants themselves. These scents can help reduce mosquito activity around you, but they're not a substitute for proper pest control if you're dealing with a real infestation. Think of them as a helpful first line of defense.

Lavender

Lavender is one of the most well-known smells that mosquitoes hate. Its calming fragrance is pleasant to us but off-putting to mosquitoes. Plant borders with the soothing scent of lavender, which will not only brighten your garden, but your spirits too.

Lemon grass

If you live in a warmer, more humid part of the country, lemon grass –  also known as citronella grass – thrives outdoors and smells wonderful, especially after rain.

Catnip

Research has suggested that nepetalactone, the compound that gives catnip its distinctive smell, can be a surprisingly effective mosquito deterrent. Just be prepared for some feline visitors.

Basil and lemon-scented herbs

Place some pots of basil and any lemon-scented herbs, such as lemon thyme and lemon oregano, outside your kitchen window to repel mosquitoes. Pot it up and place it near doorways, windows, or outdoor seating areas.

Rosemary

Rosemary is a hardy, fragrant herb that does double duty in the garden. The oil it produces acts as a natural mosquito deterrent, and it's one of the more versatile herbs, as it grows well in containers and garden beds alike. Toss a sprig on the grill while you're cooking outdoors — the smoke can help keep mosquitoes away.

Garlic

Garlic grows well even in shady spots and is said to act as a natural deterrent when planted nearby. Some people also believe that eating garlic can help, though the evidence for that is more anecdotal than scientific.

Pennyroyal

Pennyroyal oil is used as a dog and cat flea repellent and is said to repel flies, gnats, mosquitoes, fleas, and ticks. Plant it in areas where you sit outdoors, or crush a few leaves and rub them on clothing. Note that pennyroyal oil can be toxic if ingested and should not be used on or around children or pets.

Do natural scents work?

These plants and herbs can help reduce mosquito activity, and they're a pleasant, low-effort addition to any garden. But it's important to be realistic: Natural repellents work best as part of a broader approach that eliminates standing water, keeps vegetation trimmed, and uses personal repellents when spending time outdoors. 

If mosquitoes are a persistent problem on your property, professional mosquito control is the most reliable way to reduce mosquito populations and protect your outdoor space.