introducing new chipmunks

[Nick]

The thing is, if you're letting them out together, you won't be able to stop them breeding, they won't be able to help it   

[sab]

yes i understand that!i will try to be careful and not put them together when i think one of the girls is on heat by checking if her genitals are more showing.
And if one fall pregnant then i am sure it will be fine but i would have to find them a home as i can't house 1billion chipmunks!!!!!!!!!