In one aspect, the present invention is directed to an ampoule for the storage and dispersion of a volatile liquid comprised of (a) an outer shell composed of an impermeable material and defining at least one opening (b) a porous diffusion member defining an internal reservoir positioned inside said outer shell (c) a volatile liquid contained within such internal reservoir and (d) a film member adhered to said outer shell and covering said at least one opening wherein said film member is disposed such that an air space is present between said porous diffusion member and said film member and wherein said porous diffusion member is configured such that molecules of the volatile liquid can only enter into said air space via diffusion through said porous diffusion member. Such ampoules are particularly suited for the storage and dispersion of organic chemicals useful as bed bug attractants, especially where such attractants are formulated in a highly volatile liquid, such as a C8-C12 alkane. In another aspect, this invention is directed to a device adapted to receive one or more of such ampoules. In one preferred embodiment, such device is a bed bug capturing device.Dans un aspect, la présente invention concerne une ampoule pour le stockage et la dispersion dun liquide volatil, comprenant (a) une enveloppe extérieure constituée dun matériau imperméable et définissant au moins une ouverture (b) un élément de diffusion poreux définissant un réservoir interne situé à lintérieur de ladite enveloppe (c) un liquide volatil contenu dans le réservoir interne et (d) un élément formant film collé sur lenveloppe extérieure et recouvrant la ou les ouvertures. Ledit élément formant film est disposé de façon quun espace dair soit formé entre lélément de diffusion poreux et lélément formant film. En outre, lélément de diffusion poreux est conçu de sorte que les molécules du liquide volatil ne puissent quentrer dans ledit espace dair par diffusion à travers lélément de diffusion poreux
