Dry is better IMO. I put all my trim in 2 20 gallon totes. Put a 6 inch fan blowing over them. Every few hours turn it over so air gets to them and no mold or rot. About 3 days it's dry and ready for bubble bags. The dryer it is the cleaner your hash will be. If used wet the end product will be greener. But if it's for personal use it's all up to you.