Do local authorities take action against Asian hornets?

Contents

• Functioning and legal framework of municipal operations

• Guide to checking whether your local council will cover the costs

• Step-by-step procedure for reporting and destroying a hornet's nest

• Conclusion

You've spotted a suspicious nest under your roof or in a tree in your garden, and your first instinct is to call the local authority. It makes sense. Except that the answer you get depends very much on where you live, local politics and the budget available. In Belgium, there's no single rule that applies everywhere in the same way. Some communes take care of everything, while others refer you to a private operator with a simple «good luck».

Things to remember

• A comprehensive guide that demystifies the complex role of local authorities in the fight against the Asian hornet.

• Unlike institutional sites, we offer an educational overview of financial assistance, eligibility criteria and concrete procedures for private individuals, whether on private or public land.

• Functioning and legal framework of municipal operations

• Guide to checking whether your local council will cover the costs

This vagueness is something we see every season at Frelons.be. Individuals contact us after making three calls with no clear answer. They don't know whether the destruction of the nest will be free, partially reimbursed or entirely at their expense. And all the while, the nest is growing.

This article will give you a clear view of what your local authority can (and can't) do, how to check whether you're entitled to financial assistance, and above all the practical steps you need to take to ensure that the nest is quickly neutralized. No administrative jargon, just what you need to know to take action.

Functioning and legal framework of municipal operations

The Asian hornet (Vespa velutina) is classified as an invasive alien species in Belgium. This means that its presence isn't just a nuisance: it's a recognized ecological problem, particularly for bee colonies. But «recognized» does not automatically mean «taken care of by the public service». The nuance is important.

In Wallonia, the fight against the Asian hornet is based on a regional framework coordinated by the CRA-W (Centre wallon de Recherches agronomiques). This organization trains operators, centralizes reports and maps the progress of the species. The communes, for their part, play an intermediary role. They relay information, guide citizens and, in some cases, finance all or part of the destruction of nests.

But here's the crucial point: no law obliges a municipality to pay for the destruction of a nest located on private land. On the communal public domain (parks, roadsides, communal buildings), it's a different story. The commune is responsible for safety on its own land. If a nest is found in a tree in a municipal park, it must intervene. In your home? It's up to them.

The UVCW (Union des Villes et Communes de Wallonie) has published a series of practical guidelines for local authorities. These UVCW sheets detail best practices: how to organize the fight against the Asian hornet at local level, what budgets to set aside, how to work with operators trained by the CRA-W. The problem is that these sheets are recommendations, not obligations. Each commune then decides what to do.

The result: two neighbors separated by a municipal boundary can have completely different experiences. One will benefit from a free service, while the other will have to pay 100 to 150 euros out of pocket. It's frustrating, but it's the reality on the ground.

Some communes have taken the lead in an exemplary way. They have voted specific budgets, signed agreements with approved operators and set up a dedicated telephone number. Others simply refer to the CRA-W website. The difference often lies in the awareness of local elected representatives and pressure from citizens. The more residents report, the more concerned the commune becomes.

An often misunderstood fact: fire departments no longer systematically intervene in hornet nests, including Asian hornet nests. It's a common misconception. In most rescue zones, the fire department will only intervene if there is an immediate danger to personal safety (a nest at ground level in a busy area, for example). For the rest, they will refer you to a professional insect killer or to your local authority.

So, no, the legal framework does not guarantee an automatic takeover. But there are levers, and the trend is clearly in the right direction. Year on year, more and more communes are making financial commitments, spurred on by the rapid spread of the species in Belgium.

Guide to checking whether your local council will cover the costs

Before you pull out your wallet, check out what your local authority has to offer. It takes ten minutes and can save you the entire cost of destroying the nest.

First step: go to your local authority's website. Look under «environment», «pests» or «biodiversity». Many communes have created a specific page on the Asian hornet since 2023-2024, with details of how to help private individuals. If you can't find anything online, a phone call to the environment department will do the trick. Ask the question directly: «Does the commune pay for the destruction of Asian hornet nests on private property?»

The answers you can get fall into three categories:

• Full coverage : the municipality pays the full cost. You pay nothing in advance. This is the case in some communes that have signed an agreement with operators trained by the CRA-W. You report the problem, an operator comes and the commune pays the bill.

• Partial coverage : the commune reimburses part of the cost, often between 50 and 75 %. You pay the balance. Sometimes you have to pay the full amount in advance, and then ask for a refund on presentation of the invoice.

• No financial assistance : the commune offers nothing. You have to contact and pay an operator yourself. Unfortunately, this is still a frequent occurrence, especially in small rural communities with tight budgets.

How much does it cost to remove an Asian hornet nest? In Belgium, the average cost is between 75 and 200 euros. The cost of destroying a nest varies according to height (a nest 15 meters up a tree costs more than a nest accessible at 3 meters), site accessibility and the operator chosen. Some operators charge a flat rate, others adjust according to difficulty.

A word of advice: even if your local authority doesn't offer direct financial assistance for insect control, ask whether there's an environmental bonus or one-off subsidy available. Some communes have «biodiversity» envelopes that may cover this type of intervention, although this is not explicitly provided for hornets.

In Brussels, the situation is different. The Brussels Region coordinates its own actions, and Bruxelles Environnement is the main contact for the regional area. The Brussels communes choose their own policies for their own areas and for private individuals.

In Flanders, Natuur Vlaanderen, the Region and the provinces play an active role. Some Flemish provinces directly subsidize nest destruction, which eases the burden on municipalities and private individuals.

A detail that counts: always keep the invoice. Even if your local authority doesn't reimburse anything today, many have introduced retroactive assistance during the season. Others make reimbursement conditional on presentation of an invoice issued by an approved operator (not just any exterminator). You'll find a full list of approved operators at https://vespawatch.be/ for Flanders, https://renature.brussels/fr/desinsectiseurs for Brussels and https://www.cra.wallonie.be/fr/carte-des-operateurs-frelon-asiatique for Wallonia. Check this criterion before hiring someone.

Another point: some communes require that the nest has been identified as an Asian hornet nest, and not a European hornet or wasp nest. Identification can be made by sending a photo to the local authority or directly on the CRA-W reporting platform. We'll come back to this in the next section.

Step-by-step procedure for reporting and destroying a hornet's nest

You've spotted something suspicious. Insects coming and going around a grayish ball hanging high up. Here's exactly what to do, in order.

1. Identify the insect. Before reporting a hornet's nest, make sure it's an Asian hornet. It's smaller than the European hornet (around 3 cm), with an all-black thorax and yellow-tipped legs. Their nests are often high up (in tree tops or under roofs), spherical or pear-shaped, and can reach the size of a football or even larger at the end of the season. If in doubt, take a photo. A clear photo of the insect or nest is sufficient for identification.

2. Report nest. Where can I report the presence of Asian hornets? In Wallonia, the official platform is that of the CRA-W. For Flanders, it's Vespawatch and for Brussels, it's Renature. You can send your sighting with photo and GPS location. Reporting is free of charge and feeds the national cartography. You can also report directly to your local council (environment department) or call Frelons.be. The important thing is not to wait. A nest spotted in June is the size of a tennis ball. By September, it can exceed 60 cm in diameter and contain several thousand individuals.

3. Do not intervene yourself. We can't stress this enough. Don't try to destroy a nest with water, fire or consumer insecticides. The Asian hornet is less aggressive than the wasp when left alone, but it defends its nest with virulence. Multiple stings can cause severe reactions, even in non-allergic individuals. The neutralization of a hornet's nest must be carried out by a trained operator, equipped with a suitable suit and using professional products.

4. Contact a trained operator. Who should you contact if you have Asian hornets? The CRA-W publishes a map of operators trained in Asian hornet control. These professionals have undergone specific training and use validated protocols. Your local authority can also refer you to a service provider with whom it has an agreement. If you go through Frelons.be, we'll take care of everything: identification, rapid intervention and coordination with your local authority if it offers financial support.

5. The intervention itself. Asian hornet control is generally carried out by injecting a biocide directly into the nest, using a telescopic pole or a gondola for very high nests. The operator intervenes preferably at the end of the day or early in the morning, when the majority of hornets are in the nest. The nest is then left in place for a few days (to allow the product to take effect on the absent individuals), and removed if necessary. The whole operation takes between 30 minutes and two hours, depending on the configuration.

6. After the operation. Ask for a detailed invoice showing the address, date, type of work and species identification. This document will enable you to claim reimbursement from your local authority if it offers assistance. And, if you haven't already done so, pass on the report: every nest destroyed and documented helps us to monitor the species' progress and adapt our control measures.

A final point that many people are unaware of: secondary nests (the large summer and autumn nests) are not reused the following year. But the founding queens that survive the winter create new nests in the spring, often in the same area. Staying vigilant year after year is the best prevention. At Frelons.be, we intervene all year round, including in spring, to locate and destroy primary nests before they become unmanageable.

Conclusion

Belgian municipalities are playing an increasing role in the fight against the Asian hornet, but their involvement varies enormously from place to place. Some fund everything, others nothing. Your first reflex should be to check what your local authority is offering, then report the nest as soon as possible via the CRA-W or directly to a professional.

Don't let a nest grow while you wait for an administrative response. Every week counts. If you have any doubts about a nest, contact Frelons.be: we'll identify the species, intervene quickly and help you obtain reimbursement from your local authority if possible. That's our job, all year round.

Frequently asked questions