The only thing is that the hens eat the grains first and don't eat all the powder. They seem healthy.
Mine will eat the powder if that's all that's left in the bin, but I tend to take it back at the end of the week when I'm refilling the feeder and use it to make flockblock. So either don't refill until it's gone or recycle it. I've tried a couple other feeds (Game bird feed and Modesto Milling), but the birds didn't like either one as much as they do Scratch & Peck.