I live in northern MN so fresh veggies can be expensive because I have to buy them at the grocery store for 9 months of the year. During the summer, I plant a large garden and freeze veggies for my family. Can I do the same for my guinea pigs? (For example: peppers, beans, carrots, etc) I know they wouldn't be as crunchy after they are frozen, but at least I know they are healthy veggies because I grew them myself.