Walmart and Kroger both have large bins for recycling bags. Even when I cut up the plastic grocery bags and make yarn out of them, I still have ends and pieces left over;so I have a special wastebasket that I put the leftover plastic in. When I find a bag that has been ripped out, I can't cut it up properly to use as yarn; so I use that bag to store all of the leftover plastic from the bags that I did cut up. When they recycle the bags, they melt the plastic and make new bags anyway; so it does not matter that mine are shredded up into pieces. This saves even those parts of the bag from going into a landfill and laying there forever. It is strange how something that shreds apart so easy when you are carrying groceries in it can last for such a long time in the ground, and even when it is used as yarn to make rugs and slippers, it lasts a long time.