When i order mines 100-200 rats, I get bags of 5-10 (each bag)
From rat pups to Med rats(1-2 per bag for these) But i just leave them until i need them and when thawing i individually wrap them in paper towel because i found there nails kept poking hole in bag and getting them wet... So that has helped me aswell helps warm them up quicker for w.e reason.