Regarding grass clipping: I find it helps to let them dry out first (not completely) before mixing into pile. Otherwise they tend to mat up and not mix well. I

Regarding grass clipping: I find it helps to let them dry out first (not completely) before mixing into pile. Otherwise they tend to mat up and not mix well. I never tried worms because I had such good luck with hot composting using the above tips. Although you have to be careful with wood, I end up burning anything thicker than a pencil and then mixing the charcoal back into the pile.