Mosquitoes and Black flies

Picture of father and son applying mosquito repellant

Queensland Health has issued an alert following a single case of Japanese encephalitis virus in Queensland, You can find out more about Japanese encephalitis on the Queensland Government website.

Following a flood event, mosquito breeding can cause a risk to public health. We anticipate a potential increase in mosquito breeding in coming weeks. 

As flood waters recede, Council is ramping up efforts to survey and treat mosquitoes and larvae at water-holding sites across the city. Pest management officers are working with residents in flood affected areas to minimise the risk. Council also encourages residents to take steps to prevent the risk of mosquito breeding and bites.

Mosquitoes are a nuisance and can spread diseases to humans and animals. The most common diseases spread by mosquitoes in South East Queensland are Ross River Virus (RRV) and Barmah Forest Virus (BFV). They can also spread heartworm in dogs.

You can do a lot to help control them by removing breeding sources in your backyard. Mosquitoes breed in stagnant water so check your backyard for things like:

  • containers holding water
  • drains
  • bodies of water like ponds, pools and dams
  • tide-affected land along the Logan River.

You can also take steps at home to reduce mosquito breeding sites by:

  • keep gutters clean
  • fill pot plant bases with sand
  • remove tyres, containers and other items that could hold water
  • chlorinate swimming pools
  • fill holes that could hold water (large holes may need planning approval)
  • keep native fish in ponds, dams and other permanent water bodies on your property.

You can help control mosquitoes in fish ponds with native fish, remember not to release native fish into ponds creeks or waterways. We offer six native fish for free.

Black flies, like mosquitoes, are aggressive biters that are found in areas around streams and rivers. You are more likely to see Black flies after heavy rain or flooding as the flies breed in running water.

Black flies can cause painful, itchy bites. In some cases the bites may cause an itched raised skin rash or the area may be swollen and painful.

Unlike mosquitoes, black flies are only active during the day and do not bite at night.  

In Logan, we treat public areas where mosquitoes breed.

To find more information, please download our Mosquito control fact sheet (PDF 1.66 KB).

You can protect yourself and your family from mosquito and black fly bites by:

  • wearing light-coloured, loose, long-sleeved shirts and long pants when you’re outside
  • using a insect repellent
  • using physical barriers, such as nets on prams and cots, to protect babies under three months old
  • screening windows and doors
  • using plug-in mosquito repellent, ceiling fans, mosquito nets and mosquito coils
  • using a knock-down insect spray in living areas
  • using mosquito-proof screens and flap valves at every opening of rainwater tanks (the mesh size must not be more than 1mm)
  • replace your outdoor lights with yellow ‘bug’ lights.

To report mosquito infestations or find out about native fish, you can: