well, i dont do it anymore but there was an old timer that used to live on them ,and he said to leave a third of what he found for seed. he would take some of them and smash them into the ground where he thought they would do well ( new location) and shure enugh the things would grow where he left the seed. the ones that you leave your supposed to gring into the ground, bring some down into your basement with some potting soil and give it a try. there used to be companys that sold mushroom kits for home growers, dont know where they are now.