Having read in an old gardening book that jeyes fluid can be used to treat vine weevil problems (to kill the grubs) and to spray against black spot on roses. I know that it cannot be advertised for these uses, since EU testing regulations have not been met, but I'd like to try it. I have two questions. Does anyone know what proprtion of Jeyes Fluid to use per gallon of water? Are there any other traditional uses of Jeyes Fluid that I haven't discovered? I'd love to find out these things, since these old ideas seem much more sensible than the use of modern chemicals.