DIY





How to Use Insecticidal Soap in the Garden

Learn how to use insecticidal soap to combat soft-bodied pests such as aphids, whiteflies and more.

| April 24, 2013

This article is part of our Organic Pest Control Series, which includes articles on attracting beneficial insects, controlling specific garden pests, and using organic pesticides.

What Is Insecticidal Soap?

The fatty acids in insecticidal soaps break down the protective cuticles of soft-bodied pests such as aphids, so they quickly become dehydrated and die. Insecticidal soaps provide an effective way to control aphids and other soft-bodied insects if no beneficials are present to do the job.



Which Pests Does Insecticidal Soap Control?

Aphids, mealybugs, spider mites, psyllids, thrips and whiteflies are the most common pests controlled by insecticidal soap. Insecticidal soap may also have some activity against very young earwigs, grasshoppers, harlequin bugs, leafhoppers, sawfly larvae, and squash bugs provided the larvae become well soaked with soap solution.






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