Thank you all for your advice! Frodo is doing great! I washed those suckers out, and he’s been thriving ever since! His sac as completely gone away and he’s eating and exploring! He’s SO tiny! He weighs 16 grams! I love watching him grow stronger each day. I have a second one, Bilbo weighing in at 20 grams and he is doing wonderful. He’s my escape artist! Haven’t moved them in together yet, sort of nervous!