Wasps can be beneficial insects as they kill an enormous number of other ‘pests’ e.g. flies, caterpillars etc. Due to their high-energy needs, wasps also feed on nectar from a variety of flowers and are important pollinators in gardens and orchards..
Wasps do act as a pest. When gathering woody material for nest-building, they can chew and damage the timbers of both fences and buildings. They strip the bark of trees causing die-back of branches and young shoots and in late summer they can do significant damage to fruit crops. When wasps nest in high traffic areas or near homes they can become a nuisance and about 3-5% of people can have a potentially dangerous reaction to stings.