Pest control advice - Wasps

Wasp control and advice

Reasons for control

Although not a public health pest in the home, wasps often visit unhygienic places when foraging for food and therefore may carry germs. The main reason for control however is the wasps' habit of attacking when disturbed or interfered with. The resulting stings are painful and to a small number of hypersensitive people, dangerous.

Information and control advice

As the wasp season nears its end in late summer, the worker wasps become more aggressive. This is due to the queen ceasing to lay eggs. With no larvae to feed the worker wasps seek sweet substances on which to feed themselves. A favoured source of food is fallen, over ripe fruit. It is the ingesting of the often-fermenting juices that contribute greatly to the worker wasps’ increasingly aggressive behaviour. It is also at this time of year that they more frequently come into contact with humans either looking for food indoors or attracted by heat or more often by light emanating from your home.

It is not unusual to get large numbers congregating around any light source from any nest within eyesight. This usually occurs in the early morning or late evening


Firstly consider whether or not it is absolutely necessary to destroy a nest, how much of a problem is it causing? Could you safely leave it alone? Remember wasps are beneficial to your garden helping with pollination and keeping other garden pests under control. The nest will die off naturally, even if left alone.

In late spring and early summer, wasp nests can often be successfully treated using proprietary brands of insecticide for the specific control of wasps' nests. These can be purchased from most garden centres and hardware stores.

As the summer progresses and the nests become larger, it may be wiser to seek professional help. We offer a service to destroy active wasp nests in any property within the city. A competitive charge will be made and the work is guaranteed.

Before booking a treatment you must ensure that the nest is on your property. If it is not, you will have to speak to the occupiers of the property concerned so they can make their own arrangements.

Larger wasps seen from mid spring are most likely to be recently emerged young queens seeking a new nest site. We can not treat these wasps. We can not treat until there is an active nest, usually from late May.

Worker wasps seen entering and emerging from a specific point on a building or in a garden is the most reliable indication of the presence of a wasp nest. This activity should become more apparent as time goes on and should be spotted by a quick survey of the outside of the property.

Wasp nests are used for one season only and therefore do not need to be physically removed following treatment. Removal will not affect the chances of future problems. We do not remove inactive nests as part of our service.

With the exception of the hibernating queens (that leave the nest late summer) all wasps die off.

As the days become shorter, wasps are often attracted to the artificial light showing from the inside of buildings, particularly at dusk and dawn. They perceive the light as natural sunlight, become confused, and are attracted towards it. This can result in wasps finding their way inside. However, it does not necessarily indicate the presence of a wasp nest on the affected property. This can be combated by keeping windows shut; limiting the amount of light that can be seen from outside and even taping an old net curtain over the window when open will help.