I guess if you really wanted to you could. They're no different than any other water bottle. But they do have the little security strip you tear off for the sport top so you would just want to wash it. I don't we use mine but obviously they can go in your recycling
Yes. The plastic can start oxidize and react with the water. It will also begin to taste like plastic if it’s left in sunlight or hot temperatures. This product is not worth the excess. It is just Aquafina (another Pepsi water brand) packaged in a fancy bottle.