https://www.kaifengsg.com/product/knapsack-mistduster-series/ Manual and automatic knapsack mist dusters are both used for pesticide or insecticide applications in agriculture and pest control, but they differ significantly in their operation and features. A power knapsack mist dust sprayer is a versatile agricultural tool designed for efficient and precise application of pesticides, insecticides, herbicides, and fertilizers. This specialized equipment is worn as a backpack, offering mobility and convenience for various agricultural and pest control applications.