How to make liquid lawn dethatchers

Updated November 21, 2016

Many homeowners bag the grass clippings that are produced when the grass is cut with a mower. For those that choose not to bag clippings and allow the cut blades to fall back onto the lawn, the problem of thatch can become evident. Thatch is an accumulation of cut grass and other organic material on top of the soil that can form a thick mat around grass stems. This thatch mat should be broken down so that water and nutrients can reach the soil. Making a simple homemade solution known as "Thatch Blaster" can help break down thatch build-up.

Open the top of a 20-gallon hose end sprayer by turning to the left or counterclockwise to remove.

Pour 1 cup of beer or non-diet soda into the sprayer.

Add 1/2 cup of liquid dish detergent to the beer or soda in the sprayer.

Pour 1/4 cup of ammonia into the hose end sprayer with the beer or soda and detergent. Place the lid on the sprayer and shake to thoroughly mix.

Attach the hose end sprayer to a garden hose securely. Turn on the water at the faucet and adjust the control on the hose end sprayer as needed to begin spraying the lawn. Saturate the lawn thoroughly with the thatch tonic.

Things You'll Need

  • Garden hose
  • 20-gallon hose end sprayer
  • Measuring cup
  • 1 cup beer or regular soda (no diet)
  • 1/2 cup liquid dish detergent
  • 1/4 cup ammonia
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About the Author

Keith Dooley has a degree in outdoor education and sports management. He has worked as an assistant athletic director, head coach and assistant coach in various sports including football, softball and golf. Dooley has worked for various websites in the past, contributing instructional articles on a wide variety of topics.