This OMRI®-listed and compliant for use in organic gardening formula kills a variety of soft bodied insects but will not harm beneficial insects and your plants, when used as directed. The Safer® Brand Insect Killing Soap utilizes the power of potassium salts of fatty acids (insecticidal soap). The potassium salts weaken the insect's waxy protective outer shell. Apply every 7-10 days when insects are present or as needed to prevent further damage. This 16 fl. oz. container will make 6 gallons of protection for your organic garden! Since Safer Brand Insect Killing Soap, is a contact killer, several applications may be needed for full control. As a general rule when using insecticidal soap, much like watering, do not use these products in the peak of the day or when temperatures exceed 90 degrees F to avoid wilting or browning of the leaves.