These are two popular styles of pump-up sprayers for the average lawn or yard. They can be purchased at your local Home Depot, Lowes, Ace Hardware, TrueValue or just about any other local hardware store or nursery (even and are generally priced from under $20.00 for the pump sprayer to about $75.00 for the backpack style sprayer. Other styles are electric and gasoline powered backpack sprayers and pull-behinds (on wheels).