How well do pine shavings break down in a compost pile? How long does it take compared to garden scraps? I plan on using pine shavings because it just seems that they do a better job than straw, and I can get it more readily. I really want to use the dirty shavings rich with chicken poo in my compost pile so I can augment my sandy garden soil. Any tips for using the shaving in a compost pile would be welcome!