I buy shavings/sawdust mix in bulk. Look for companies working with wood in your area (they often sell firewood, mulch, etc.). The shavings are often part of their business too. (just be careful they understand what they are doing, because not every tree is good for the shavings from what I know).
"Life isn't about waiting for the storm to pass: it's about learning to dance in the rain..."
"When we are no longer able to change a situation - we are challenged to change ourselves."
"How people treat you is their karma; how you react is yours."