Abstract: A top-loaded dusting bag for dispensing powdered insecticide upon contact with the bag. The bag includes an inner porous sack made of burlap or other loose weave material and an outer skirt made of a non-porous material which covers the top and sides of the inner bag and extends below the bottom of the inner bag, leaving the bottom of the inner bag exposed only from underneath. In a first embodiment, a rigid support member secured to one side of the opening and a cantilevered U-shaped member secured to an opposing side of the opening form an assembly which in a first position exposes and separates the opening sides to form a funnel and in a second position, wherein the U-shaped member is rotated around the support member, folds the opposing side over the one side of the opening to close the opening.