Okay, so today I'm constructing the girl's dust bath box. It's approx. 3' x 4' and is made from some recycled 2x12's off my BIL's goose-neck trailer (he was replacing 2 of the boards and I snatched 'em up). So! I plan on using wood ash and either peat moss or planting mix...NO use of DE (don't like all the 'what-if's' involved). So the question is, which to use? Wouldn't peat moss be too 'chunky' in a way? I dunno.... All advice most appreciated!