Wow...15 live is a nice little group of scrubs! If you feel that they are too many to care for practically...then you could release them in a safe place...but I would probably wait at least a month until they are eating and you feel they can make it on their own. Mother's do leave babies right away in the wild though, so they have to be self-sufficient from birth. I just wouldn't be able to do it though...if Cee Cee's 40 babies had all been born live, I would probably be going out of my mind trying to care for 40 babies along with my other garters! I use recycled paper substrate for my babies because it seems to be the safest for them. I use carefresh if I don't have the recycled paper. I also put a pile of moist moss in the corner for them to keep them hydrated...they love to burrow in it. I put paper towels down on top of the substrate and put a dish of food on top of the paper towels...and supervise closely when they eat. Sometimes babies will have a bit of trouble eating at first and get into food fights.