An open-topped mesh basket (6) rests on a mesh (5) support within the trap (1).

Label holders (10) adapted to be mounted on a supporting surface formed of a grid of wire rods (26, 28), such as a wire basket, a wire rack, a wire shelf or the like.

Insects attracted to the light (14) are entrained by the water (16) and are flushed down into the trap and retained within the mesh basket (6).

The smaller bags can stand alone, fit neatly in a bin under the kitchen sink, or hang from a wire basket inside the cupboard door.