In a private home you can find spiders, ants and flycatchers that are harmless to humans. Centipedes also grow in damp areas of the apartment. And if exotic scolopendras are specially purchased for breeding in terrariums, then cockroaches, ground beetles, clothes moths and ticks are unwelcome guests. March 9 is the Day of Domestic Insects - arthropods that live side by side with people.