When we talk about dryness here we mean water content. Clumping is due to stickiness, which comes from the trichomes and is usually a Good Thing. I keep my stash mostly frozen, which tends to reduce moisture content. For daily use, at my desk I keep a small amount of each strain in a pill bottle along with a desiccant packet. By the time I use it, water content is pretty close to zero. Before someone reacts in horror (which happened the last time I mentioned this) the desiccant comes with my medication.