Pristine works very well for me. It's also excellent for grapes, fruit trees, strawberries and garlic. I use the one labeled for turf grass, under the name "Pageant". You can get a smaller bottle of it for about $100. Which might well still be a lifetime supply... It does all the fungal diseases on tomatoes. FYI its not labeled for tomatoes though, so use or don't use at your discretion...