At this time of year we find wasps munching on our ripening Plums and Apples. They are not the main villain as they only attack fruit that is already damaged by birds or other insects. Their mouths are not strong enough to break the skin. Wasps help in a garden as the larvae feed on aphids and caterpillars.
Woodlice are generally seen as scavengers who eat rotting matter, they are not thought of as harmful to the garden. However, they do chew leaves and stems of tomatoes and cucumber in the greenhouse. Keep areas clear of any debris. Recycle woodlice you capture on to the compost heap.
Earwigs look worse than the bites they take out of plants. Whilst Dahlia and Chrysanthemum plants may be a bit chewed and ragged they will not come to great harm unless you are growing show blooms.
Again Earwigs feed their newly hatched young on aphids and other small insects. To catch these night feeders use the inverted plant pot on a cane method with the pot filled with straw or well crumpled newspaper.
Birds, frogs and toads that prey on earwigs will help reduce the population of earwigs and keep it under control.