Stephen, Interesting question. We were told we can't provide information like this to clients for a mixture/product that does not contain a label.
That said, the proportion is 2-3 tablespoons of liquid oil, 2-3 tablespoons of liquid dishwashing detergent (not one that contains a degreaser which can burn the leaves of the plant) and 1 gallon of water. (I always use Dawn regardless and it has not burned the leaves on my plants.)
Hope this helps. Thanks.
Can someone advise on the proper proportions of soap and water for an insecticidal spray for aphids, etc. Is there a preferred soap for this purpose?
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Stephen H. Brown
County Extension Director & Horticulture Program Leader
University of Florida/IFAS
3406 Palm Beach Blvd., Fort Myers, FL 33916
Lawns, Gardens, and Nurseries Solutions
Phone: (239) 533-7513 Fax: (239) 485-2305
Solutions For Your Life"