Mosquitoes and Midges

Please call us on +353818001590  or Commercial customers +353818001589

National coverage across 26 counties, means you are never far from an expert

All our technicians are highly trained and certified pest controllers

Trustpilot Accredited - Customers rate us excellent on TrustPilot

Mosquitoes and Midges

No one likes the idea of being bitten by mosquitoes, midges, or gnats. However, climate conditions, especially in southern Ireland, are becoming increasingly hospitable to mosquitoes. Bites are irritating, and although not usually as painful as being stung, mosquito bites are very itchy and cause significant discomfort.

Furthermore, the rising frequency of mild winters and damp, protracted springs in the Irish climate has allowed some mosquito species to extend their breeding seasons and expand their range. Consequently, both homeowners and businesses are observing a noticeable increase in nuisance biting, which can disrupt outdoor spaces and reduce the enjoyment of gardens, parks, or commercial patios. For individuals with heightened sensitivities, persistent scratching can lead to pronounced swelling or secondary infections.

Worried about mosquitoes? Call us and we’ll arrange a visit from one of our technicians to assess the midge or mosquito control problem and recommend a way to get them to buzz off.

Do we have Mosquitoes in Ireland?

Yes, there are more than 20 native mosquito species in Ireland. Some of these are known to bite humans (such as Culex molestus), while others, like Culex pipiens, are generally a nuisance and do not carry disease in the Irish context.

Public health authorities are actively monitoring for invasive species, such as the Asian Tiger Mosquito (Aedes albopictus). Increased international travel and climate shifts heighten the risk of these invasive species establishing themselves here. Early identification and professional control are crucial to preventing a mosquito infestation on your property.

Mosquito Species

Mosquito Practical Checklist

A thorough approach to mosquito prevention begins with targeting every stage of the insect’s life cycle.

  • Eliminate Stagnant Water: Identify and remove sources of standing water, as even a tiny amount can create a breeding environment.
  • Regular Checks: Encourage everyone in your household or workplace to perform checks during the active season (April to October).
  • Proactive Reduction: Minimising mosquito activity significantly decreases the risk of bites, skin irritation, and allergic reactions.

Indoor Prevention

Effective indoor prevention focuses on disrupting the breeding cycle and blocking entry:

  • Remove Standing Water: Empty water collected in plant trays, buckets, or neglected drains.
  • Maintain Cleanliness: Regularly clean vases and pet water bowls; check for condensation or pooling near appliances and in utility rooms.
  • Seal Entry Points: Install tightly fitted insect screens on windows, vents, and doors to reduce the likelihood of mosquitoes entering.

Garden Prevention

Regular garden maintenance is essential for outdoor control:

  • Monitor Receptacles: Check water butts, tarpaulins, plant saucers, old tyres, and wheelbarrows where rainwater persists.
  • Secure Water Storage: Cover outdoor water tanks with secure lids.
  • Natural Controls: Introducing fish, such as goldfish, into garden ponds can provide natural control of larvae without chemical treatments.

How to be Mosquito and Midge Free

There are a range of DIY products to help with controlling mosquitoes and midges or gnats. These are very effective if you have a small infestation. However, if your problem won’t go away, you’ll need professional advice. Our externally validated technicians are experts in the habits of gnats and mosquitoes. They can provide the best treatment for your particular problem as well as advice on how to keep these insects at bay.

How will a Mosquito Infestation Affect my Business?

In Ireland, mosquitoes primarily impact businesses by acting as a persistent nuisance, leading to diminished customer satisfaction and employee discomfort. Key operational impacts for Irish businesses include:

  • Reputational Risks: Biting insects in outdoor dining or accommodation areas can damage your brand and lead to negative online reviews.
  • Operational Disruptions: Staff complaints regarding bites can affect workplace morale and productivity.
  • Mitigation Costs: Businesses near water features may incur expenses for specialist control measures to manage stagnant water.
  • Emerging Health Risks: While uncommon, the presence of species capable of carrying pathogens requires heightened vigilance for businesses with high outdoor exposure.

Rentokil Ireland provides safe, reliable, and effective insect control. Our specialists develop customised integrated programmes to protect your premises and reputation from mosquitoes and other biting insects.

Mosquitoes: Frequently Asked Questions


  • How harmful are mosquitoes in Ireland?

    Currently, they are primarily a nuisance, causing itchy and inflamed bites. While they do not spread Malaria domestically, they can carry viruses like West Nile or Usutu within bird populations. The main risk for most people in Ireland is secondary infection caused by scratching the bites.


  • What is the most effective way to control mosquitoes?

    Source reduction is the most effective method. Because mosquitoes require stagnant water to breed, emptying saucers, buckets, and blocked gutters removes their habitat. For personal protection, use repellents containing DEET or Icaridin and ensure windows have fine mesh screens.


  • What month do mosquitoes come out in Ireland?

    Mosquitoes typically emerge in late April or May as temperatures rise. Their peak activity occurs during the warmest months of July and August. Depending on autumn temperatures, they may remain active until late October before the first frosts arrive.


  • What smells do mosquitoes dislike?

    Mosquitoes are repelled by scents that mask human odours. They particularly dislike Citronella, Eucalyptus, Peppermint, and Lavender. In Ireland, the most effective natural deterrent is Lemon Eucalyptus oil (PMD), though skin-applied repellents offer the most reliable protection.


  • What time of day do mosquitoes bite?

    Most Irish mosquito species are crepuscular, meaning they are most active at dawn and dusk when humidity is higher. However, some species found in shaded woodlands may bite during the day if their resting place is disturbed.


  • How and where can you spot mosquito eggs?

    Mosquito eggs are tiny, dark, and often look like miniature rafts floating on the water's surface. They are most frequently found at the edges of water butts, garden saucers, or pond margins.

Contact Us