Many of us know that insects clean or preen themselves. If we watch closely, we will see how an insect works diligently to clean its antennae, feet and mouthparts regularly. This behavior may be easily observed when watching cockroaches, flies and other insects. Some insects, such as social insects, ants, bees and termites, may preen each other or otherwise communicate and share food through preening, trophyllaxis and touching of antennae.