If using a 32-ounce (1 quart) spray bottle, the ratios are slightly decreased. Mix 1⅛ to 2¼ teaspoons for regular insect conditions, or 3½ teaspoons for heavy infestations.

To make your insecticidal soap spray without oil, take these steps: Use a clean spray bottle for your mixture. If you are incorporating oil, mix 1 tablespoon of soap with 1 cup of cooking oil and ...