Hi, I have used both in the brooder. I prefer shavings for weeks 1-4 and pellets for weeks 4-8 than outside to the coop or chicken tractor they go. The type of shavings you use will determine how much dust you get. I've recently started using Marth Pine Wood shavings from Menards. They are very low dust and super compressed; a really money and time savers. The are also SUPER soft for chicks. I use pine pellets from TSC and make sure to have three or more roosting bars in the brooder plus alfalfa at one end for the chicks to scratch in. You could sub for straw. The nice thing is you can rake the straw without disturbing the pine pellets and I find they keep the smell to a minimum. I am considering using pine pellets in my coop once the weather warms up. I currently do the deep litter method in my coop with a blend of straw, raked leaves (including bald cypress) and found if turned frequently offers little to no smell in the coop.