I usually use a kitchen spray bottle with a solution of the fungicide and more or less mist the surface of the medium. Jim Shields At 06:29 PM 12/21/2013, you wrote: Salvia dorii germinated about 10 days ago, and I'm seeing signs of damp-off. I occasionally find it on cyclamen seedlings as well. I was using a canister of Captan that's designed to be used as a duster, but when I'm trying to dust just the contents of a 4-inch pot without getting it outside the pot, it's quite difficult and doesn't flow that easily. Normally, I can come up with some off-the-wall tool or method to do the job I want, but this time I'm blank. The commercial dusters, especially one that has a rubber bulb you squeeze, seem too big. I haven't, however, had any experience with the rubber bulb duster. Can anyone offer any suggestions, sources, etc? Robin Hansen Nursery North Bend, Oregon USA email@example.com Southwest Coast of Oregon, Z9 more or less -- James Shields Tel. ++1-317-896-3925 17808 Grassy Branch Rd firstname.lastname@example.org Westfield, IN 46074 U.S.A.