Plan the perfect garden with our interactive tool →

How to Clean a Pump Sprayer

Full length view of washing up liquid bottle
George Doyle/Stockbyte/Getty Images

Pump sprayers use a telescopic plunger to draw a solution, such as an herbicide or pesticide, out of the reservoir. After the solution leaves the reservoir, the plunger pushes it through the hose, into the spray gun and out the nozzle. Operated by hand, pump sprayers utilize high pressure to spray at distances of up to 25 or 30 feet. Pump sprayers require cleaning in between uses to flush out chemicals that may dry up and clog the inner workings of the sprayer.

Remove all chemicals from the pump sprayer. Empty the chemicals from the pump sprayer by either using them up or disposing of them according to manufacturer’s recommendations.

Soak the nozzle of the pump sprayer in a small bowl of warm water and a squirt of dish soap. Allow the nozzle to soak for approximately 10 minutes. Rinse the nozzle with warm water and dry it with a paper towel.

  • Pump sprayers use a telescopic plunger to draw a solution, such as an herbicide or pesticide, out of the reservoir.
  • Empty the chemicals from the pump sprayer by either using them up or disposing of them according to manufacturer’s recommendations.

Pour warm water into the reservoir of the pump sprayer along with a few squirts of dish soap. If you do not have dish soap, any mild detergent will suffice. Soak for approximately 10 minutes.

Reattach the nozzle to the pump sprayer. Pump the soapy water through the sprayer several times to rinse out the hose, sprayer gun and the sprayer nozzle.

Pour the soapy water out of the pump sprayer, and fill the reservoir with warm, clear water. Pump the clear water through the hose, sprayer gun and nozzle to remove any soapy residue. Allow the pump sprayer to air dry.

  • Pour warm water into the reservoir of the pump sprayer along with a few squirts of dish soap.
  • Pour the soapy water out of the pump sprayer, and fill the reservoir with warm, clear water.

Tip

If you have used an herbicide or pesticide in the sprayer, clean the sprayer with ammonia instead of dish soap. Pour the ammonia into the reservoir at a ratio of 1 quart of ammonia for every 25 gallons of water. Allow the ammonia solution to sit in the reservoir for 15 minutes and then pump it through the hose, sprayer gun and nozzle until the reservoir is completely empty. Allow the pump sprayer to air dry.

Check the information booklet that came with your particular pump sprayer to see if the pump mechanism requires yearly maintenance. Some manufacturers recommend taking the mechanism apart to clean and oil it once a year.

Warning

Never store chemicals or leave unused chemicals in the pump sprayer.

Related Articles

How to Mix Groundwork Weed Killer
How to Mix Groundwork Weed Killer
Using Soap As a Sticking and Spreading Agent for Herbicides
Using Soap As a Sticking and Spreading Agent for Herbicides
How to Clean Slippery Patio Stones
How to Clean Slippery Patio Stones
How to Get Rid of Meadow Ants
How to Get Rid of Meadow Ants
How to Clean Concrete Floors Before Painting
How to Clean Concrete Floors Before Painting
What Oil Filters Fit Cub Cadet Mowers?
What Oil Filters Fit Cub Cadet Mowers?
Are Ficus Trees Poisonous to Children?
Are Ficus Trees Poisonous to Children?
How to Use Roundup Safely
How to Use Roundup Safely
Are Chinese Palm Plants Poisonous to Cats?
Are Chinese Palm Plants Poisonous to Cats?
How to Make Your Riding Lawn Mower Quiet
How to Make Your Riding Lawn Mower Quiet
How to Remove Graffiti From Concrete
How to Remove Graffiti From Concrete
How to Apply Canola Oil As a Pesticide
How to Apply Canola Oil As a Pesticide
Garden Guides
×