Mark,
I thought the fire ant observation was interesting. Hey, maybe you could patent and market the product. I want a percentage! :p
Greg,
Yes it is a soluble powder. The granules are quite small, less than 1 mm across down to much smaller. Sounds like broadcasting might be the way to go.
Shan,
I agree with your positive comments regarding Southern Excellence. One question, do you also have problems with incomplete dissolving of the product? Maybe the remaining "mush" is just fillers and binders, I don't know.