Is the Whirligig beetle a nuisance?

NO, Whirligig beetles are aquatic in nature, and cannot survive on dry land. They therefore rarely come into contact with humans or human dwellings. They feed on small organisms and debris from the water surface, and do not attack crops or other plants. They make no noise and are generally innocuous. The only potential source of irritation from this insect is that one particular species, the Gyrinus, is known to emit an unpleasant-smelling secretion, although this is rarely problematic.

Because of these factors, the Whirligig beetle is not considered a pest.