These sprayers hold a pint to a quart of liquid in a plastic or metal bottle with a trigger spray head that adjusts from a fine mist to a stream of liquid. They are useful for spraying houseplants, spot treating isolated weeds or other small jobs. Many ready-to-use pesticide products are packaged in a sprayer bottle, and empty ones are available at garden centers. Though inexpensive, their price and quality vary widely. Other hand sprayers include the "flit-gun" type, now available in rustproof poly.