insecticidal soap

Q: One of my neighbors told me to use Dawn detergent on my tomato plants to kill the insects. Will that help?

Q:  One of my neighbors told me to use Dawn detergent on my tomato plants to kill the insects.  Will that help?  But another neighbor said I should call you.
A:  I am so glad you called because you can make your own Insecticidal soap by using 2-3 tablespoons of pure Ivory liquid soap to one gallon of water.  Do not use any of the degreasing soap products as this can cause damage to the plant leaves by removing the waxy outer coating on the leaf called the cuticle.