Yo guys, I can't get to any headshops but I managed to get a cheap plastic grinder. It grinds pretty good, better than I thought. It doesn't have what I think is called a catcher, for the keif to go, but I am getting a powdery build up in the bottom of the grinder. Is this keif? If so how can I get it out of the grinder and what can I do with it?