What are pests?
A pest is any organism that
spreads disease, causes
destruction or is otherwise a
nuisance. Some examples of
pests are mosquitoes, rodents,
and weeds. Not all insects are
pests. Many different kinds of
insects eat other insects and are
beneficial species. Examples of
beneficial insects are dragonflies
(which feed mainly on mosquitoes)
and lady beetles (which eat
aphids, scale insects, mites, and
other insects).