We are putting pea gravel and all purpose sand in our duck coop. The problem is, when it is raked, it gets REALLY dusty in their pen. The ducks have not moved in yet, and I am thinking I will be spraying it out daily or every other day, so I am not sure the dust will be a problem. My husband raked it yesterday and it got really dusty yesterday, so he asked me to find out what kind of sand people use, or if this is just the nature of the beast in this instance. We are using all purpose sand because it is the coarsest we could find, but he was wondering if playground sand might work. Thoughts??