all the mouse babies dying

Question
everytime after my two adult mice have baby's they seem to die after they are about 2 to four weeks old.and i dont know why this has happend twice after the two adults have breeded but not by the same male and they are dying and then the others eat the dead ones.it seems like they are catching something.i would like to know what is happending

Answer
Dear Krystie,

Here are the main options:

1.  Are the mice all related?  If so it could be genetic.

2.  Are they poisoned? Change food supply, water, make sure there are no chemicals in or near cage.

3.  Do they have plenty of food and water?  There should always be extra.

4.  Are they sick?  Bring the entire cage to the vet with all  mice.

I'm so sorry.

squeaks,

Natasha