If you have Ball brand 16 oz. jars, recycle them with Magnanimous for future salsa batches. More than that, get paid for bringing your jars to us! We'll take 50 cents off your next salsa purchase for every washed clean jar. The screw on rings are appreciated, but not necessary. That's the same as 50 cents in your pocket per jar. It doesn't go into a land fill, it doesn't go to a recycling plant to get broken down for other glass products. Instead, it's a 100% post consumer content jar.