A scent dispersal device includes a reservoir usable to hold a scented material that emits a desired scent. A rate-controllable valve regulates a fluid connection between the reservoir and the external environment. The rate-controllable valve may be adjustable to alter the flow rate of the scent substance from the reservoir to the external environment. The scent dispersal device may also include a vent usable to reduce a pressure differential between the reservoir and the external environment and/or to facilitate the movement of air, the ambient atmosphere and/or another gas into the reservoir.
