Wasps eat large holes in the sides of ripe fruit, whether remaining on trees or on the ground. When gathering apples, pears and plums, take care not to grasp a fruit with a wasp on it. Wasp nests are composed of a grey, papier-mâché material and can be larger than footballs. They are found in lofts, outhouses, and even below ground. Sprays specifically for destroying them are obtainable.
Caution: Do not approach a nest unless you are wearing protective clothing, including a face mask.
Although regarded as a pest, wasps also play a positive part in the garden. They catch caterpillars of insect pests on which they feed their young.