Abstract: The invention provides a device for treating fabrics in a tumble dryer comprising a patch having a front side and a back side, wherein the back side has a means for attaching the patch to an interior surface of a tumble dryer, wherein the front side is a carrier material that is impregnated with a fabric treatment composition and wherein the patch is attached to the interior surface of a tumble dryer door or back wall, whereby a portion of the fabric treatment composition is transferred onto fabrics in the tumble dryer as a result of contact between the patch and fabrics during a tumble drying cycle.