Gammarus are small flea like crustaceans that are found on beaches, near rivers and lakes and in gardens. In some conditions they will move indoors.
Gammarus are crustaceans and not insects. Although they look a little like fleas with vertically flattened bodies and the ability to hop they are larger than fleas and do not bite.
In moist conditions their numbers can increase rapidly and they will spread indoors seeking places to live.
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