The invention relates to a bed bug detection device (10) comprising a refuge(16) which elicits a taxis responsefrom bed bugs and a non-trapping indicator surface (18), on which the bed bugsmay leave indicators of their presence, such asfaecal matter or cast skins. The refuge is positioned in close proximity tosaid non-trapping indicator surface such that the bedbugs can leave an indicator of their presence as they travel across theindicator surface on their way to or from the refuge.Preferably the non-trapping indicator surface takes the form of a skirt whichsurrounds a refuge made of corrugated paper. The inventionalso provides a passive method of detecting the presence of bed bugs withouttheir capture by detecting the presence of indicatorsrather than the bed bugs per se.
