Neutral displacement wick

An air freshener device that emits fragrance through the evaporation of a fragrance-containing fluid comprising:

• a container, comprising a particular volume of the fragrance-containing fluid having a fluid level within the container;
• a wick disposed partially in, and partially out of the fragrance-containing fluid, the wick having an immersion section immersed in the fluid so as to displace a displacement volume of fluid and a non-immersion section extending outward from a surface of the fluid, the immersion and non-immersion sections being disposed on opposite lateral ends of the wick;
• the wick further comprising a displacement portion and a wicking portion, the displacement portion being configured so that when the immersion section is immersed in the fluid, the displacement portion displaces a desired first volume of fluid and the wicking portion being configured to wick a second volume of fluid from the immersion section to the non-immersion section, the displacement portion and the wicking portion being designed to achieve a ratio between the displaced first volume of fluid and the wicked second volume of fluid in a range of about 0.95 and 1.05 whereby the fluid level remains substantially unchanged after immersion of the immersion section in the fluid,
• wherein the displacement portion is impervious to the fragrance-containing fluid.