Helix aspera is what I have. They are common brown garden snails. I caught mine in the yard. I kept the wild caught until they lai eggs. I scooped the eggs out of the soil and put them in a container of clean soil to hatch. This generation I used as feeders and some I kept as breeders when they got too big for my chams. Don't feed off the wild caught and don't let the CB near anything the WC have been in.