Pests are divided into groups according to the damage they cause. The group of pests with whom the average person comes into contact mostly is known as arthropods and includes insects, mites, tics and spiders. These pests often invade human homes, live off human food scrapes or use pets as their hosts to keep them alive. Almost all insects go through a process of metamorphosis – they go through life cycles during which they change shape and size. (Insert key word) specialists often use these life cycles to their advantage, in order for their Pest Control Sydney programmes to be more effective.