Natural insect repellent: How to use tea tree oil to keep bugs away

If you're looking for a natural way to keep mosquitoes, flies and other pests at bay, tea tree oil might be your new best friend.

Known for its powerful antibacterial and antifungal properties, tea tree oil also has insect-repelling qualities — making it a popular choice for those wanting to avoid chemical sprays and harsh ingredients.

In this article, we’ll explore how tea tree oil works as an insect repellent, how to use it safely and a few DIY recipes to try at home.

Why tea tree oil works against insects

Tea tree oil (also known as melaleuca oil) contains compounds like terpinen-4-ol and cineole, which are known to have insecticidal and repelling effects. Its strong, medicinal scent acts as a natural deterrent for many bugs, including:

• Mosquitoes
• Ants
• Flies
• Head lice
• Bed bugs
• Midges and gnats

While it’s not as long-lasting as commercial repellents, it can be a great addition to your natural bug-fighting toolkit — especially for short-term use or indoor protection.

Important safety note before you begin

Tea tree oil is highly concentrated and should never be applied directly to the skin without dilution. Always patch test before use, and avoid using tea tree oil on children under 6 or around pets (especially cats) without consulting a professional.

How to use tea tree oil to repel insects

Make a natural bug spray

This is one of the easiest and most effective ways to use tea tree oil as an insect repellent.

DIY tea tree oil bug spray recipe

• 100 ml (3.4 oz) distilled water
• 1 tablespoon witch hazel or vodka (helps mix the oils)
• 10 drops tea tree oil
• 10 drops citronella or eucalyptus oil (optional for added power)
• Small spray bottle

Instructions:
Combine all ingredients in a spray bottle and shake well before each use. Spray lightly on exposed skin, clothing or around windows and doorways.

Tip: Reapply every 1–2 hours when outdoors, as natural oils evaporate faster than synthetic chemicals.

Create a tea tree oil diffuser blend

Add 5–10 drops of tea tree oil to a diffuser with water and run it indoors during peak insect times. This helps deter flies and mosquitoes from entering your home — especially near doors and windows.

Make a cotton ball barrier

Place a few drops of tea tree oil on cotton balls and tuck them into corners, cupboards and entryways to deter ants, spiders and other crawlers.

Use in a candle or oil burner

Burning tea tree oil (mixed with water) in an oil burner or using it in a natural citronella candle can help keep flying insects at bay during outdoor gatherings.

Best places to use tea tree oil for insect control

• On your skin (in diluted form) before heading outdoors
• Around windows, doorways and cracks in your home
• In the garden (mixed in a spray bottle with water to lightly mist outdoor furniture or plants — avoid spraying directly on sensitive plants)
• In camping gear or tents as a natural deterrent

Can you use tea tree oil to treat bug bites?

Yes! Tea tree oil is known for its anti-inflammatory and antiseptic properties, which can help reduce swelling and itching caused by insect bites.

Simple bug bite relief recipe

Mix 1 drop of tea tree oil with 1 teaspoon of carrier oil (like coconut or almond oil) and dab gently on the bite.

When not to use tea tree oil

• Avoid using undiluted tea tree oil on the skin — it can cause irritation.
• Do not use on or near cats — tea tree oil is toxic to them.
• Keep out of reach of children and pets.
• Always consult a healthcare professional before use if pregnant or breastfeeding.

Tea tree oil is a powerful, natural option for repelling insects when used properly. Always be aware of potential side effects when using tea tree oil on your skin.

Whether you're spraying it around your windows, diffusing it indoors, or using a DIY bug spray before heading outside, it’s a safe and effective way to keep bugs away — without relying on harsh chemicals.

Give it a try this summer and enjoy a bug-free experience the natural way!