Home Depot sells Ortho Garden Disease brand concentrate in (green) pint bottles at their stores: [URL]http://www.homedepot.com/h_d1/N-5yc1vZ1xh3/R-100046414/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053[/URL]

Here's a link to locate a store near you that carries the GardenTech/GulfStream brand of Daconil concentrate in (red) quart bottles: [URL]http://www.gardentech.com/Dac_wheretobuy.asp[/URL]

Here's a link to locate a store near you that carries the Bonide brand Fungonil concentrate in either (white) pint or quart sized bottles: [URL]http://www.bonideproducts.com/products/product.php?category_id=879[/URL]
[B]
All listed brands above use the 29.6% chlorothalonil formulation, which is most effective for the home gardener.[/B]

There are other brands, such as Hy-Yield, that are formulated with 12.5% chlorothalonil and therefore must be mixed with a higher percentage of concentrate to water. See (yellow) bottle image below.

Regardless of the brand, [B]chlorothalonil is a preventative treatment and not a cure[/B]. For best results, you should spray your plants weekly throughout the season. And remember... it helps other garden crops too, such as squash, melons and cucumbers!

A thank you to everyone who has posted so far about the blight, it a lot of food for thought. I live in East Central Pa, in a county that grows a lot of commercial potatoes. My 2 cents: last year I used copper spray alternating with Serenade twice a week and lost all my tomatoes, Rutgers was the last hold out for several weeks before it died. I knew deep down inside the blight was coming back despite the fact a lot of people said it wouldn't. It's not here yet, but my gut tells me it's coming, rainy weather for most of this week is the forecast. I try organic methods if at all possible. But blight is tough bugger to beat. I'm thinking of using chlorothalonil alternating with Excel LG because Excel is a systemic fungicide. I'm more concerned about rain washing off topical applications, but am afraid that the organic route alone will not be potent enough.

Spraying "Daconil" and feeling guilty???
 

I just sprayed my "5" plants tonight with "Daconil" I am feeling a positive vibe here :panic: I wish everyone here a GREAT NIGHT! >>>>>>>>>Talon

I've got some fungus amongus on the poor plants that got too wet, and were under an overhang to boot. But, it doesn't look like late blight to me. Even so, I've been using daconil and the other plants are fine.

I'll probably lose two in the next day or so - at least, they are dragged into quarantine. I'm just going to see if I can't get any of the fruit to ripen.