Jerry Baker's formula is 1 cup liquid dish soap, 1 cup antiseptic mouthwash and 1 cup chewing tobacco juice that has been steeped like tea. Put all of these ingredients in a 20 gallon hose end sprayer and top off the sprayer with warm water. I've used this for a few years now. It seems to do a good job. If you have an insect you have trouble getting rid of, add the recommended amount of liquid sevin to the sprayer, Kevin