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Coffee Grounds & Pest Control

Coffee grounds are a favorite for those who want to kill yard pests without poisoning the ecosystem. This kind of pest killer is easy to find since many households have coffee grounds already.

A mixture that includes coffee grounds can kill many garden pests.

Coffee grounds are a favorite for those who want to kill yard pests without poisoning the ecosystem.  This kind of pest killer is easy to find since many households have coffee grounds already.


Benefits

Coffee grounds are non-toxic and, in very small doses, will not injure pets, small children, or the environment.  They are also an inexpensive ingredient for a pest control for anyone who regularly consumes coffee.


Warnings

Coffee grounds will kill bugs that may be beneficial to your garden.  If you're concerned about plants in the area you are treating, never use the coffee grounds "straight" because of their high acid content.

Neutralize the acidic content of the coffee grounds by mixing them with four parts shredded leaves to one part coffee grounds, or a mixture of coffee grounds, shredded leaves, wood ash and lime.  Sprinkle the grounds lightly on the area where pests reside.


Considerations

If you don't drink coffee at home, check with local coffee shops about taking some of their used grounds.  Starbucks, for instance, introduced a program called Grounds for Your Garden in 1995 that gives customers a free 5-lb.

bag of coffee grounds for gardening needs. 

About the Author

Dana Sparks has been a professional writer since 1990. As a staff reporter, she has written hundreds of newspaper and magazine articles, and she is also the author of two published novels. Sparks holds a Bachelor of Arts in business.

Photo Credits

  • slug image by Chris Parlee from Fotolia.com
  • slug image by Chris Parlee from Fotolia.com