R.V.
When I dont plan on freezing my milk, I store it in rubbermaid containers. I think they are only a dollar or two for pint ones and only a little bit more for the larger ones at walmart or target. They are nice because they are easy to keep in the fridge and they poor easy too. Then you can put them in the dishwasher to sterilize them (though I think soap and water is ok too). That would be more environmentally healthy too because then you wouldnt be tossing plastic bags every day. Hope that helped.