Spot sprayers are extremely useful in a variety of horticulture and agriculture applications. They mount easily on an ATV or garden tractor. They're typically used for medium to heavy-duty spot spraying of fertilizers and pesticides in gardens, lawns and small orchards. Spot sprayers are also commonly used for pasture cleanup and to spray fence rows.
A larger-capacity tank, when compared to a backpack sprayer, lets you spray longer without having to stop and refill. A spot sprayer is powered by an electric pump.