Leeches and their removal

Published on 26 June 2025

About Leeches

Leeches are segmented worms that are ectoparasitic (feeding on the outside of their host). They can be found in moist areas throughout Australia, and especially in rainforest sites, damp ground and in low foliage. Although unpleasant and itchy, their bites are usually harmless and can be treated without medical attention. It’s important to monitor bites for signs of infection or allergic reactions, but these are quite rare.

Reducing the likelihood of bites

• Wear long pants tucked into socks or consider long, tight-woven socks like ‘anti-leech socks’ or gaiters to help prevent leeches from finding soft skin to latch onto 
• Apply insect repellent before starting work or consider clothing that is treated with repellent
• Check for leeches during breaks or after working (check in socks and shoes) and keep an eye out for leeches on clothes while working that might be able to be flicked off before they latch on

Leech removal

If a leech does latch onto you, removing it quickly and safely can minimise discomfort.  Using methods harmful to the leech, like applying salt, fire, pulling, or sprays, may cause the leech to regurgitate into the bite which may increase the risk of infection. Breaking the suction with a fingernail or credit card can remove the leech more quickly reducing the chance of regurgitation. To do this, gently pull the skin under the leech until it’s taut and slide a fingernail or card under the leech’s mouth to separate it from the skin. Flick the leech away before it reattaches.

Clean the wound with water and apply an antiseptic to help avoid infection. Cover with an adhesive pad e.g. Band-Aid. Remember to monitor the bite for signs of allergy or infection that may require medical attention. Itchiness is common for hours or days - try to avoid scratching the site.