A method for forming and adhering an entrained polymer structure to a substrate, comprising the steps of: a. extruding an entrained polymer composition in molten form, wherein the entrained polymer composition comprises a base polymer and a particulate active agent; b. providing a substrate having a surface for receiving application of the entrained polymer composition in molten form; and c. applying the entrained polymer composition in molten form in a predetermined shape to the surface of the substrate, to form thereon a solidified entrained polymer structure upon cooling and solidification of the entrained polymer composition, wherein the surface of the substrate is compatible with the entrained polymer composition in molten form so that the entrained polymer composition in molten form thermally bonds therewith, adheres thereto, and solidifies upon sufficient cooling to form thereon the solidified entrained polymer structure, and wherein the method is carried out using a hot melt dispensing apparatus comprising i. an extruder for blending and melting the entrained polymer composition and for providing a flow of the entrained polymer composition in molten form through the apparatus; ii. one or more hoses, each of which having an internal lumen in fluid communication with an exit of the extruder to receive the flow of the entrained polymer composition in molten form, wherein the lumen is heated to maintain a molten state of the entrained polymer composition when conveyed through the lumen; and iii. an applicator in fluid communication with the hose, the applicator comprising a dispenser, wherein the dispenser is heated to maintain the molten state of the entrained polymer composition and to facilitate precise formation of the entrained polymer composition in molten state into the predetermined shape, wherein the lumen terminates at the applicator to which the entrained polymer composition in molten form is conveyed through the hose, and wherein the dispenser applies the entrained polymer composition in molten form in the predetermined shape to the surface of the substrate. a. extruding an entrained polymer composition in molten form, wherein the entrained polymer composition comprises a base polymer and a particulate active agent; b. providing a substrate having a surface for receiving application of the entrained polymer composition in molten form; and c. applying the entrained polymer composition in molten form in a predetermined shape to the surface of the substrate, to form thereon a solidified entrained polymer structure upon cooling and solidification of the entrained polymer composition, wherein the surface of the substrate is compatible with the entrained polymer composition in molten form so that the entrained polymer composition in molten form thermally bonds therewith, adheres thereto, and solidifies upon sufficient cooling to form thereon the solidified entrained polymer structure, and wherein the method is carried out using a hot melt dispensing apparatus comprising i. an extruder for blending and melting the entrained polymer composition and for providing a flow of the entrained polymer composition in molten form through the apparatus; ii. one or more hoses, each of which having an internal lumen in fluid communication with an exit of the extruder to receive the flow of the entrained polymer composition in molten form, wherein the lumen is heated to maintain a molten state of the entrained polymer composition when conveyed through the lumen; and iii. an applicator in fluid communication with the hose, the applicator comprising a dispenser, wherein the dispenser is heated to maintain the molten state of the entrained polymer composition and to facilitate precise formation of the entrained polymer composition in molten state into the predetermined shape, i. an extruder for blending and melting the entrained polymer composition and for providing a flow of the entrained polymer composition in molten form through the apparatus; ii. one or more hoses, each of which having an internal lumen in fluid communication with an exit of the extruder to receive the flow of the entrained polymer composition in molten form, wherein the lumen is heated to maintain a molten state of the entrained polymer composition when conveyed through the lumen; and iii. an applicator in fluid communication with the hose, the applicator comprising a dispenser, wherein the dispenser is heated to maintain the molten state of the entrained polymer composition and to facilitate precise formation of the entrained polymer composition in molten state into the predetermined shape,