The Bird Barrier Zon Scare Gun - Propane Cannon (sd-zn10) is a lightweight compact propane-fired cannon that diffuses an automatic thunderclaps, creating discouragement to birds and other damaging wildlife in large open sites. The intermission between detonations can be altered from two minutes to thirty minutes. The Zon Scare Gun works on LP gas and utilizes a piezo lighter for combustion, which is perfect for one hundred thousand sparks. Each ten kg bottle of propane is equal to twelve to fifteen thousand detonations. (Propane tank not included, tripod sold separately)