Mary Sue, a reference to something else I found: "If a virus has established, some practices will help to prevent spreading and minimise the damage. Control insects if these are a vector. Wash hands in soapy water and dip knives in trisodium phosphate, Virkon, or milk containing at least 3.5% proteins. The milk must be renewed daily. For all work in the crop, always go in one direction. Have large shoe disinfection trays at the entrance of your property and at every greenhouse entrance. Make enough time for the big clean-up after ending the crop." regards, Bill Richardson Gippsland Australia 0-15c. Cold, wet days of winter. Ixia site: http://www.angelfire.com/ri/ixia/ Suite 101 site: http://suite101.com/welcome.cfm/bulbs_and_plants