I've tried just about everything for septoria on tomatoes but not the milk. I'm using a copper fungicide this year and it is keeping it under control, but there still is some on some of the plants. I heard spraying with milk really smelled bad, does it? What concentration did you use? Thanks, Karen, SC >>>I sprayed the milk mixture once on all the affected plants, and it has been a week since then. Margaret, you are a lifesaver. I am delighted to report that the milk treatment worked like a charm on the tomatoes, and best of all, it's organic. Out of about 450 plants, only about 35 will need replacing. We're forever in your debt. We still have lots of varieties of tomato plants. Want some? They're on us.