Traps are disclosed for controlling flying insects such as wasps. The traps are pre-packaged with attracting liquid prior to sale, and then sealed with a peel-off film in a manner that prevents leakage prior to use. When the trap is about to be used, the peel-off film is removed to expose both a trap entry and a pivotable stand. A rain/sun shield is then mounted on the stand, preferably with the upper portion of the stand projecting through the shield to form part of a hanger.