@Tyrel26 not sure what part of Canada you are in but I regularly order from http://www.canadianmouseman.com/eng/products.htm, Tyrone has great stock, great public relations and I have never had a problem with the mice I get from him. Prices are great too!!

I keep some in Ziploc bags in the freezer for a couple of months before they start to freezer burn. The rest that I order I use my Food Saver and vacuum pack into bags of 5 each and then they get used before they can freezer burn. Once vacuum packed you can keep them in the freezer for about 2 yrs.

He ships via bus usually, and they are packaged to keep frozen, I have never had any thaw on me yet and I just received an order the other day when it was 22 degrees here. I am in Saskatchewan.

Hope this helps.