If you have a large yard and/or very tall trees a larger battery, electric or gasoline-driven wheeled power sprayer model is best. They typically hold more than 10 gallons. Self-contained battery powered models are very portable and only require basic battery maintenance and recharging. Electric models, while environmentally friendly, keep you tethered by an electric cord to the nearest outlet. Gasoline powered models are among the most powerful sprayers available, though they create noise and air pollution. Smaller, powered sprayers can be moved on self-contained wheels, though they can often be hitched to a riding lawn mower, garden tractor or ATV. Larger designs usually require a garden tractor to move them.