A delivery device is disclosed that can have a cylinder holding pressurized gas and a cassette holding particles. When the delivery device is actuated, the delivery device can spread the particles over a large target area, with a reasonably uniform distribution over that target area, and can operate quietly. The particles can be held in a cassette. The cassette can be configured to release or discharge over 70% of the particles during use. The device can have a safety interlock to prevent or minimize the risk that the device will be unintentionally activated. The device can have a silencer.本發明揭示一種輸送裝置，其可具有保存壓縮氣體之一氣缸及保存顆粒之一匣。當致動該輸送裝置時，該輸送裝置可將該等顆粒散佈在一大目標區域上，在該目標區域上具有相當均勻的分佈，且可安靜地操作。該等顆粒可保存在一匣中。該匣可經結構設計以在使用期間釋放或放出70%以上的該等顆粒。該裝置可具有一安全聯鎖以防止或最小化該裝置將被不經意啟動之風險。該裝置可具有一消音器。
