A dispensing system (20) for dispensing a volatile material includes a first wall portion (26) with an opening (32) disposed therein, and a second wall portion 28) hingedly connected to a first end (26a) of the first wall portion (26) about a first fold line (30). The second wall portion (28) further includes an aperture (38) disposed therein. A third wall portion (66) is hingedly connected to a second end (26b) of the first wall portion (26) about a second fold line (70). The third wall portion (66)includes a tab. The first, second, and third wall portions (26,28,66) fold about the first and second fold lines (30,70) to form a substantially planar structure in a first state. The tab on the third wall portion (66) is adapted to be retained within the aperture (38) of the second wall portion (28) in a second state.
