Tried it, just not really impressed which sucks b/c I love the price.
Ronon did ok on the Hi Pro Plus, Joey did horrible. Tried the Hi Energy- didn't work either. Also tried the grain free formulas.
For my allergy dogs-the Ocean Blend worked the best. My Frenchie actually did pretty well, but my Dogo couldn't eat it. The Yukon Blend gave them dry coat.
The Greyhounds poop never firmed up on any formula. I just went through 4 weeks of the Hi Energy b/c the Hi Pro Plus didn't work and Joey poop is ok soft and mushy but has a form some days, but when he runs hard or plays- it gets really runny and he gets dehydrated. So we went back to Redpaw 32K. Cost more, but poop stays firm no matter how hard he runs.
I think if they used a different fiber source it would work better. Wish they would use beet pulp. My dogs all do better with it as a fiber source, but since it has such a negative look in the public eye, they don't use it.