Patent ID: 8535653

Claim:
An article for the release of a plurality of vapours, the article containing: a first liquid or gel phase comprising a first vaporisable agent; a second liquid or gel phase comprising a second vaporisable agent; and a third phase which is a gel whose volume reduces when exposed to air and which constitutes a barrier between the first and second phases; wherein the first and second phases are such that if placed in contact with each other one phase or one or more component thereof would mix or migrate into the other phase wherein the article comprises an enclosure having an internal partition wall which extends from a top wall to a bottom wall of the enclosure between the first phase and the second phase at the commencement of use of the article, the internal partition wall having a section not in contact with the bottom wall filled with a plug of said third phase gel; wherein, in use, initial vaporization of the first phase commences and when the first phase has substantially completely-issued from the article in use, the third phase is exposed to the air and can shrink, and wherein the third phase is configured to shrink slowly only to permit vaporization of the second phase once the first phase has been exhausted.