Robin, If you think that you will have problems in the future with mice then you need can foods or store the food that is not in cans in steel trash cans or other steel containers. Rice, beans, grains, pasta all can be stored first in Mylar bags add oxygen absorbers and heat seal the Mylar bags. I buy them here,
Once the food is in the Mylar bags you put them in the steel trash can and seal with an aluminum tape. This will stop the mice.
The beans and rice are great because it has protein and you can add almost anything to it. For the pasta I buy powdered cheese.