This Complete Meal has an item from each of the food groups your hermit crabs would need to survive & thrive in the wild. If you think you may be missing something from their diet, try adding this mix or one of my other complete meal mixes to their dinner plate! Comes in powdered form & in a 2x3 bag. All items are made in an area that houses nuts & seafood. While always taking caution as to not get those items around or near other foods. Seafood Complete Meal