Insect repellent

There is no cure or vaccine for most mosquito-borne diseases in WA. The best way to prevent infection is to avoid being bitten.

Use an effective insect repellent containing DEET (diethyltoluamide), picaridin or oil of lemon eucalyptus (OLE).

It is important not to confuse products containing OLE with eucalyptus-based essential oil formulations, as the latter will not generally provide effective protection.

As a general rule, the greater the percentage of DEET or picaridin, the longer the product will remain effective. Always read and follow the label instructions. Incorrect application may reduce the effectiveness of the product.

Repellent use in children

Where possible, avoid exposing your baby or child to mosquitoes. Consider staying indoors, using pram netting or dressing them in loose long-sleeved clothing, socks and shoes.

• Under 12 months – repellents containing DEET picaridin or OLE, are not recommended.
• From 12 months – repellents containing up to 10% DEET picaridin or OLE, can be used.

Correct application of repellents to children

• Always apply the repellent according to the instructions on the label.
• Do not allow children to apply repellents.
• Apply repellent first to the hands of the carer and then spread evenly to exposed skin of child.
• Avoid applying repellent to the child’s hands, near the eyes or mouth.
• Avoid applying repellent under clothing.

Correct application of repellent in adults

• Always apply the repellent according to the instructions on the label.
• Always use a repellent containing up to 20% DEET picaridin or OLE.
• Apply repellent to all areas of exposed skin.
• For all areas (except face), apply repellent directly to skin and spread evenly with hands.
• For face application, apply first to hands and then spread evenly on face, avoiding the mouth and eyes.
• Do not apply repellent under clothing.
• For prolonged periods outdoors, you may need to reapply repellent. Follow label instructions about how often you need to do this.

• Repellents will not work if you apply them sparingly to the skin.

‘Natural’ repellent products

‘Natural’ insect repellents containing botanical extracts are not recommended as they provide limited protection against mosquitoes. Those products that do repel mosquitoes, only do so for a short duration (<30 min) and must be reapplied very frequently to be effective. Natural repellents should not be relied upon to provide adequate or prolonged protection in regions where mosquito-borne disease is a risk.

Wearable devices

Wearable repellent devices (wristbands, patches and stickers), containing DEET or natural extracts, are becoming increasingly popular. These products are not recommended as their efficacy is very limited.  Individuals should not rely on these products to provide protection in regions where mosquito-borne disease is a risk.

Repellents are considered extremely safe when applied correctly. However, if you experience a serious reaction, consult your GP or call the Poison Information Centre Australia on 13 11 26.

Where to get help

• Find a GP/doctor 
• Search a GP urgent care practice (external site)
• Visit healthdirect (external site) or call 1800 022 222

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This publication is provided for education and information purposes only. It is not a substitute for professional medical care. Information about a therapy, service, product or treatment does not imply endorsement and is not intended to replace advice from your healthcare professional. Readers should note that over time currency and completeness of the information may change. All users should seek advice from a qualified healthcare professional for a diagnosis and answers to their medical questions.