I do once a day for about an hour or two and then seal em back up... After getting them manicured and dried down to approx 15% moisture content, which is usually about when the stems will snap and not bend and break, about a week and a half-two weeks hangin in the drying area... I'll repeat that process for a couple two or three weeks, and kinda sample a piece of a nug in a bowl to see how its burning and tasting, to know when enough curing has taken place... Any kind of desicant I have found is a potentially bad thing, as it seems to zap all of the moisture outta the buds... So, I tend to steer away from the silica packs, like some people swear by...