funny, I just came across this thread.. yesterday I bought a 40 pound bag of them for just under $5 and put a scoop in each one of the chickens' nests to keep the eggs clean..
the manufacturer of some of those stove pellets is just 4 miles down the road from me.. Marth Wood Products..
They're a lot bigger than layer pellets. I put them in my run and nobody tries to eat them. They are WONDERFUL! They work especially great when it rains here and makes a big muddy mess...I just sprinkle that on the ground after it's done raining and it dries my run out FAST! They're my new favorite thing!!