Please clarify how to spray mixes. On another thread, a spray "mix" was mentioned of captan, immunox, triazicide and a sticker (liquid soap?). Can someone please tell me if 1) you mix up each chemical individually and mix all the gallons together or 2) just make up one gallon with teaspoons or whatever of each chemical or 3) spray the trees one chemical at a time over each other or what? I do not want to screw this up. (Thanks, Mrs. G).