I have pretty good success in the greenhouse spraying with either Neem oil or insecticidal soaps. For the latter I just use dish washing detergent. And these are not nearly as toxic as some of the others being discussed. Bob Hoel 630-279-8510 On Dec 8, 2011, at 12:14 AM, pbs-request@lists.ibiblio.org wrote: > > i repeatedly spray with horticultural oil. > This might be at lowes as Volck oil. > important thing is not to mix with or add onto leaves previously treated with sulfur containing compounds. > ? > James Frelichowski > ?