Rhino Agricultural Power Knapsack Sprayer JTPS4035 - 4 Stroke is a modern motorized knapsack that pumps four times faster and covers a wide area in a short time than the manual sprayer.With the motorized sprayer, farmers can spray up to four acres of land in one day as compared to the manual one which covers two acres in a day. It is also used for spraying cows and sheep to control tick infestation.