There is a volatile composition dispenser comprising: a housing comprising a rear frame having a frame opening a push button movably disposed within the frame opening; and a cartridge aligned with the push button, the cartridge comprising a container having an orifice and containing a volatile composition, a rupturable substrate sealably attached to and covering the orifice, and rupture elements adjacent the rupturable substrate; and a resilient member aligned with the push button and the rupture elements wherein upon receiving a pressure on the push button, said resilient member moves the rupture elements into a first position in which the rupture elements engage with the rupturable substrate and wherein upon removing the pressure from the push button, said resilient member exerts a force on the push button and moves the rupture elements into a second position in which the rupture elements are not engaged with the rupturable substrate.

There is a volatile composition dispenser comprising a housing having a rear fram, a rupturable cartridge disposed within the housing and a button for rupturing the cartridge. The volatile composition dispenser further comprises a guiding mechanism for guiding movement of the button from a first position to a second position when the button is pressed.

A volatile composition dispenser and methods of detecting the replacement of a cartridge of volatile composition are provided. The cartridge of the volatile composition dispenser includes one or more reservoirs, with each reservoir containing a volatile composition. A method of volatilizing the volatile composition includes operating the evaporative assistance elements with varying energy over a total emission program. Replacement of the cartridge by a user when the volatile composition dispenser is disconnected from an external power source is detected in order to reset the total emission program when reconnected to the external power source.

A membrane device is intended for the release of volatile compositions. The membrane device includes one or more membrane layers which are permeable to the volatile composition and which are positioned within a vapor impermeable package such as package formed by an upper and lower vapor impermeable panel. The upper vapor impermeable panel includes a window that allows access to the membrane layer for activation of the membrane device. The membrane device can also include decorative portions for aesthetic appeal.

An air freshener includes a reservoir for storing a liquid fragrant substance, the reservoir has a cavity and an opening to the cavity. A permeable membrane is coupled to the reservoir and has a first surface facing the cavity that covers the opening and a second surface facing away from the cavity. A laminate removable seal includes a metallic layer and a sealing layer, the laminate removable seal is disposed on the second surface of the permeable membrane. The sealing layer is removably adhered to substantially the entirety of the second surface of the permeable membrane.

A volatile composition dispenser includes a housing having opposing first and second walls that are joined along their peripheries to one another. The first wall has an aperture and the second wall has a plurality of apertures. Within the housing, rests a volatile composition cartridge and a gap, which exists between the cartridge and a bottom surface of the housing, wherein said bottom surface is formed from a joinder of a base portion of one or both of the first and second walls, and wherein, upon activation, the exposure percentage of the dispenser is from about 40% to about 90%; wherein at least about 60% of the total surface area of the plurality of apertures results from individual apertures of said plurality that each have an area of at least 30 mm.sup.2 and an aspect ratio of at least about 1:2. Dispenser of a similar housing, cartridge, and gap when is activated by a user and thirty days after said activation, exhibits about 70% to 90% weight loss of said volatile composition of a partially exposed membrane of a fully exposed membrane.

A controlled release device and method of use, the device comprising a reservoir wherein the reservoir is divided into one or more chambers; a first active material placed in a first chamber of the one or more chambers and at least one second active material placed in at least one other of the one or more chambers wherein the first active material comprises an active ingredient (AI), wherein the AI is one of an insecticide, a spatial repellent, a herbicide or a larvicide; wherein the at least one second active material comprises one or both of a matrix and an altering material; a permeable membrane covering the first chamber; partitions positioned between adjacent chambers of the one or more chambers for dividing the reservoir into chambers such that full or partial removal of one or more of the partitions results in mixing of the first active material and the at least one second active material to form a mixed active material; a cap positioned over the membrane for sealing the reservoir such that removal of the cap results in controlled release of the AI from the mixed active material through the membrane.

An energized assembly to disseminate a treatment agent in vapor phase to a local environment. The assembly includes an emanator element to hold treatment agent, and a flameless energizing source to facilitate volatization of the treatment agent. Preferred embodiments operate for a period of time of between about 4 and 8 hours, and can then be discarded. Typically, a housing associates the treatment agent and the energizing source. Embodiments may sometimes include one or more of: a gas-tight boundary element, a thermal transfer element, a trigger mechanism, a safety mechanism, a termination mechanism, a time-delay mechanism, solidized treatment agent to avoid spills, and a sequestering arrangement.

Fragrance delivery device with first flexible impermeable barrier layer and second flexible impermeable barrier layer coupled to the first flexible impermeable barrier layer to define a first chamber. A reservoir substance having a volatile medium is disposed in the first chamber. The device further includes at least one vapor releasing microporous layer having a plurality of micropores therein. The vapor releasing microporous layer defines a second chamber. A frangible seal seals the first chamber from the second chamber in a delivery condition. Activation of the device compromises the frangible seal to fluidly couple the first chamber with the second chamber and to transfer the reservoir substance to the second chamber. The volatile medium of the reservoir substance is releasable from the fragrance delivery device via the plurality of micropores in the use condition.

A photosensitizer formulation can be disposed on or in a mesh; net; netting; screen; curtain of strands, fibers, or monofilaments; substrate, personal protective gear, mask, or any other suitable object. The photosensitizer formulation, when in contact with molecular oxygen and activated by light or ultrasound, produces microbicidal singlet oxygen. A variety of different arrangements and applications are described. For example, an air flow device may also be included to generate a flow of air through or over the photosensitizer formulation. A fluorescent formulation may be included to monitor photobleaching. The photosensitizer formulation may be disposed in a concentration gradient to generate antigenic particles by damaging or destroying microbes.