Your Cascade ActionPacs should be in pristine condition, so you get the clean you, and we, love, Robert. Moisture is an ActionPacs best friend, and, worst enemy. If your pack was exposed to moist, or humid, conditions, this can sometimes happen. Be sure to store your package in a dry, cool spot and keep your bucket tightly closed between uses. It would bring us joy to help further with this. Every weekday, we're by our phones from 9 AM to 6 PM, EST. Dial 1 (800) 925-6278, we hope to chat with you soon.