Are these in plastic containers or paper? I have successfully frozen milk in the plastic containers. The milk expands when frozen, and the concave circle on the side of the container pops out. Or, you can open them and use a little from each carton. I'd be worried about the paper cartons exploding.
We have successfully frozen milk in cartons. Never had a problem.
Same here. I've been doing it for years--only ever had one break on me, at the seam on the side, and I think that was because it was at the bottom of the pile in my chest freezer. In fact, I'll be stocking up on Stonyfield Farms this week with my coupons and a sale