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