Cornmeal Juice is a natural fungal control for use as a soil drench or a foliar spray in any kind of sprayer. Make by soaking horticultural or whole ground cornmeal in water at one cup of cornmeal per gallon of water. Putting the cornmeal a nylon stocking bag to hold in the larger particles is one method but I usually just toss the cornmeal in the water, let sit for an hour or so, and strain out the solids. The milky juice of the cornmeal will permeate the water and this mix should be used without further dilution. Cornmeal Juice can be mixed with compost tea, Garrett Juice or any other natural foliar feeding spray.
We have several reports that mange has been controlled with cornmeal juice dips. In this case the solids don't even have to be strained away. Use the same mix - about one cup of whole ground cornmeal or horticultural cornmeal per 5 gallons of water.