I have had 2 different chemists and a USDA County Agent tell me that because of the surfagents in the dishsoap and the ethanol in the mouthwash that the odds againts TMV are out of sight. I can not find any direct proof that this combination has caused or spread TMV. I do find many Organic books that specify tobacco products. IE My latest find, Check Rodales "The Color Handbook of Garden Insects" by Anna Carr and then look up Greenhouse Whiteflies I also find 99% of the writing on TMV, says "Smokers should wash hands". I can not find one case where tobacco chewers, snuff dippers or tobacco handlers was written. Two people on this list tell me any raw tobacco can spread TMV, I have used this formula for 5 years, And know of someone that has used it for 15 years, with no problems. All this "Junior Chemist" can do is weight the pros and cons. I would rather use this than Diazinon or Sevin. Byron