Is BioSafe disease control a good option to control disease tomatoes? Have been spraying Daconil but still got gray leaf spot. Also should Daconil be sprayed after every rain… I have been spraying even if it's every day if it rains. I lost all my tomatoes last year because as a new gardener I did not know to spray for prevention. Would love to hear a reply from Digdirt as I am in central Arkansas. Thanks so much for all the wonderful advice on this site! I used Earl's Hole this year and my tomatoes have done well until getting the gray leafspot.