Mine come individually sealed from here;

http://www.drsfostersmith.com/produc...m?pcatid=18461

I do not get as many mice for the money, but I don't know how long Im going to have my lil guy so I'd prefer to not stock up.

But for freezing that many mice I would think one of these products would be handy;

http://www.homedepot.com/webapp/wcs/...9X-_-100482993

http://www.fingerhut.com/ProductGrou...ategoryxid=922

http://www.asseenontvguys.com/index....ROD&ProdID=383