Patent ID: 7046920

Claim:
A mat for dispensing volatile vapors, comprising: a substrate having a first substrate portion and a second substrate portion, the first substrate portion having applied thereto a first volatile material, the volatile material comprising an active selected from the group consisting of insect control agents, fragrances, deodorizers, and combinations thereof, and the second substrate portion having applied thereto a second volatile material, the second volatile material comprising an active selected from the group consisting of insect control agents, fragrances, deodorizers, and combinations thereof, wherein the substrate is made of a porous material that is sufficiently heat sensitive so as to melt when contacted by a hot forming die but also sufficiently heat resistant so as to be suitable to be used in the presence of heat from a heater; and a moat which extends at least partially into the substrate and defines the first substrate portion and the second substrate portion, the moat having been formed by pressing a portion of an upper wall of the substrate with a hot forming die; wherein the active in the first volatile material and the active in the second volatile material are the same, but the first and second volatile materials are differently formulated such that the first volatile material and the second volatile material are released at different rates when the mat is heated; and wherein the moat is positioned radially outward of the first substrate portion and the second substrate portion is positioned radially outward of the moat.