Abstract: A fly trap in the form of a double arched disposable element formed from a single blank and retained in functional shape by identical end plates having recesses to receive the ends of the disposable element. The element forms a bridge between the end plates and has windows to provide light from the top and a cut-out section which folds in a reverse direction to the arched portions to provide an entrance chamber for the insects.

Abstract: A prefabricated approximately T-shaped blank of flexible sheet material with a pair of screened openings spaced apart from one another in the longitudinal portion of the blank is foldable along spaced parallel folded lines into a flat trap structure composed of outer and inner arch-shaped walls with screened skylights therein, the inner screened skylight having a small exit port therein. The structure thus formed has a floor panel with approximate arch-shaped side wings foldable upward therefrom into end closures for the structure, these wings containing small entrance doors near their fold edges. The screens are cemented to the border areas around their respective openings and these cemented areas covered by pairs of half-I-shaped border flaps integral with the blank and folded therefrom over the cemented areas.

Abstract: A prefabricated T-shaped blank of flexible sheet material with a pair of screened openings spaced apart from one another in the longitudinal portion of the blank is foldable along spaced parallel fold lines into a fly trap structure composed of outer and inner arch-shaped walls with screened skylights therein, the inner screened skylight having a small exit port therein. The structure thus formed has a floor panel with approximately arch-shaped side wings foldable upward therefrom into end closures for the structure, these wings containing small entrance doors near their fold edges.