Apparatus for delivering a volatile material

An apparatus for delivering a volatile material comprising a delivery engine comprising:

• a. a reservoir comprising a volatile material mixture, said mixture comprising about 40% to about 100%, by total weight of said mixture, of volatile materials each having a VP at 25° C. of less than about 0.3 torr;
• b. a rupturable substrate secured to said reservoir;
• c. a rupture element integrally formed with said reservoir, extending opposite a z-direction, and positioned adjacent to said rupturable substrate;
• d. a microporous membrane enclosing said reservoir, said rupturable substrate and said rupture element, wherein said microporous membrane comprises an average pore size of about 0.01 microns to about 0.06 microns and an evaporative surface area of about 2 cm2 to about 35 cm2;
• and wherein said apparatus further comprises a housing comprising a notch extending towards said z-direction for compressing said rupture element upon insertion of said delivery engine into said housing, wherein said delivery engine provides 30 to 90 days of continuous emission of said volatile material without leakage.