People typically use garden or pump sprayers to apply pesticides or fertilizers in gardens and around landscaped areas. Garden sprayers feature a compression system that gives even and wide distribution of liquids without an electric hookup or cabling. Given a garden sprayer's mobility and non-complicated design, some people also use garden sprayers as an alternative to spray bottles and costly pressure washers to apply cleaners to stained areas such as siding, roofs, driveways and walkways.
Sweep dirt and debris from the stained area using a broom or vacuum.
Unscrew the lid from your garden sprayer and set it aside.
Mix your cleaning solution. Read the stain cleaner instructions for mixing the cleaner with water. Pour the recommended amount of cleaner into your garden sprayer tank and then follow with water up to the fill line. Screw the lid securely onto the sprayer when finished and tighten.
Grasp the pump handle and pump up and down until you feel "tension" on the handle as the pressure builds.
Adjust the nozzle spray setting. Spray the stained area once to test the setting. If set to a stream, turn the nozzle to the spray setting.
Spray the stained area in a back-and-forth motion until you have saturated the stain. Wait for the cleaner to dissolve or break down the staining material. Follow the label instructions.
Scrub the stain, as needed. Use a brush, scouring pad or melamine resin foam eraser to help remove the stain.
Empty the cleaning solution from the tank and refill it with clean water to rinse the formerly stained area and clean the tank. Spray away materials and cleaning solution from the area. Empty the tank again when finished and store the sprayer with the lid unscrewed.