Enough time to get "cute & personable"...pretty soon you have too many "hold backs" lol. And if the adults are your "pets", you have to figure at some point they'll
need to "retire" also. They don't stay good breeders forever, what then? (just saying)
Good that you have another room also...rats are nocturnal, so you don't want to sleep in the same room unless you're in a coma.![]()