I have been trying to clean the poop off the ground in the chicken run. A rake doesn't do it and I don't want to pick up with a tiny cat litter shovel or my hands. The ground is just dirt now that the chickens have eaten and dug up all the grass. I tried putting pine shavings on the ground, but they just blow away. I have read about using DE, but is there anything else to add to that that will help keep it healthy for the chickens and easier to get the poop up?