I've ordered that, layer pellets w/grubs from Scratch and Peck to try. I was replying to @fuentemoon about the brand they like and their offer of a discount code, Grublies brand. The crumbles there look good, fairly uniform (hard to pick out individual contents) but the pellets are mixed pellets & grains.@ChicoryBlue The Scratch and Peck with Grubs IS pellets in the layer...and crumbles for the starter & grower.
I think if I end up needing to supplement calcium I think the ladies will go for the homemade yogurt mixed with calcium (and possibly the other extra add-ons now under consideration per @MaryJanet ). Just offered them the plain yogurt which they gobbled a few eager bites, and then I mixed in the calcium and some all-flock on my way to making the cute little balls which they do love wolfing down, but I stopped when it was still goopy and offered it to them. They've figured out how to eat the soft stuff better than before, or for some reason now they go for it. Good!