Bad news, you need to dip them in warm soapy/bleach water and let them dry out and do it again, once in there, they crawl under the thin green bark... in 5-6 days you will have gnats flying around, you must get those yellow fly traps, and isolate them you can feel the green becomes softer, meaning, they are there already, I would cut the bottoms as they crawl inside also. See? that is what I described, so root them outside in your warm weather, less moss, and cover with thin fabric, I think their eggs may come in the moss too, sorry to hear, Frank.