The Cow Sprayer Express is designed for long-term installation. You build a frame with wood or gates. Then set it on top, fill it up and turn it on.
The Cow Spayer Express comes with a front curtain with strips that will get soaked with pesticide. This helps with those stubborn face flies.
The 15-gallon tank sprays approximately 1400 head one time for less than a nickel per spray.