I am very mathematically challenged (I suck at math), but is this not the same as our Corid? I have found corid to be only minimally effective in my chicks once they get coccidia. The BBS breeds seem to get it the worst here. One breed in particular seems to have no innate resistance and without fail has to be treated. I bought the sulmet, but haven't tried it. Good to hear it works well. This morning at 10 am, in my hen house, it is 96 degrees and 80% humidity. Fans and misters are going and the majority of the chickens are out in the woods. Coccidia thrives it here.
Kathy, have you heard anything about Corid losing its effectiveness? It could be I have more strains than the average chicken keeper because of the environment.