I get the Amish feed mill 16% ground layer mash mix.. It has some powdery content so I have found that mixing warm water into it makes it a soft pasty mush.. Because it is wet they get a lot of their daily water needs and it keeps them from rooting through it and tossing the feed everywhere.. We tried crumbles and pellets in gravity feeders but the darling pick through it for the big chunks and waste the rest all over the place.. Now that the grass and clover are growing again we are seeing them leave some in the trough and bolt straight for the field to scratch and peck more.. Had to set up the spare water pan outside the hen house because we hit 80 deg. today in Ohio..