Hey, Kozmo. Caking with powders and blends can take place if there is any humidity in the least, even humidity. Be sure to store your powders and blends in airtight containers. Should you be not able to uncover them, buy them on line. I'll leave some hyperlinks under that can https://codyklmgo.blogsmine.com/31330004/fascination-about-chili-powder-sweet-paprika-powder