Also, never underestimate the power of oyster shells. Met a chicken guy I had only talked to once. Said his black giant stock quit laying after eating their eggs. I didn't want to sound like a know-it-all being new to chickens so I didn't say anything. A month later I went to talk chicken and...
My frugal grit tip: you know that tiny gravel they put on the roads in winter? Yep, passersby see me scooping it up after winter! I wash it with dawn dish soap due to the de-icing chemicals and spread to dry before storing for chicken use. Hey, after the snow season is gone the gravel just clogs...