the present invention comprises a bio - polymer based solid for the sustained release of an active agent into the air consisting of : a ) a primary starched — based polymer ; b ) a secondary polyether block amide polymer , and : c ) a filler component . d ) one or more active oils the active oils can be one or more fragrances so as to provide an air freshening composition , a flavor to create a certain aromatic environment or a repellant such as insect repellants for the elimination of mosquitoes and the like . animal repellants may be incorporated to ward off unwanted pets and wildlife outside the home and attractants may also be utilized in the production of fishing lures and the like .