Most wasps are not predatory and will only attack when threatened. Many wasps are equipped with venomous stings that can cause highly allergenic reactions in some people and pain to most.
If a nest is located near an entrance to your home, alfresco area or deck where you spend a lot of time, you may need to take action to control wasps. If you attempt to remove am active wasp nest they will attack, and call in other members of the nest to join the attack.
Unlike a bee, which can only sting once (and leaves the stinger behind in the skin), wasps can sting repeatedly. For instance the European wasp emits a scent chemical (pheromone) that alerts other European wasps to attack.
The sting of a wasp has certain features, including:
A key step in controlling wasps is to make your home environment less attractive to them. Wasps look for protein in the form of meat and sugar for carbohydrates. One way to keep them out of your yard is to pick up fallen fruit and keep pet food indoors. They also like water and compost heaps.
Keeping areas dry, eliminating standing water, fixing leaking taps and removal of all sources of free water - particularly during hot weather
If wasps are about ensure any soft drinks, beers or wines are served in clear glass or clear plastic cups. Wasps will frequently enter open cans and bottles and can be extremely dangerous if swallowed
Ensure that your outdoor rubbish bins have tight-fitting lids
Cover compost bins
If you see a wasp, leave it alone – it will only attack if provoked
Ensure children and pets are kept well clear of wasp swarms and wasp nests
If possible, reduce the number of flowers in the garden as many wasps are nectar feeder and this will encourage them to go elsewhere for a food source