WebInsecticidal soaps are usually used as a 1 to 2% solution (2½ to 5 tablespoons per gallon). Always follow the label for the product you are using. Do not attempt to use in higher …
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This recipe makes a 1% insecticidal soap solution. Most commercial insecticidal soaps contain 1-2%. If you have hard water, use distilled water (or bottled water) in this recipe. Hard water will make the soap less effective. Spray on the front and backside of leaves, and in the soil around the plant.
Homemade insecticidal soap is more eco-friendly than commercial-grade insecticidal soap, and this makes it much better for the environment. There are several advantages of using this soap, including:
The bottle may be labeled as “Suitable for Organic Use,” or “Safer for Plants and Vegetables,” but if a commercial bug-killer is a true insecticidal soap, its bottle will list “potassium salts of fatty acids” or “potassium laurate” as ingredients. Insecticidal soap also comes in a concentrated solution to be mixed with water.
Soap. While regular dishwashing soap will work in a pinch, the best soap to use as a natural insecticide is a pure soap with fatty acids that will work to eradicate bugs and will mix easily with water. Purse Castille soap is a great, inexpensive choice with these fatty acids. Make sure not to use product that has additives such as fragrance.