You do need to use a pressure canner. If you have one, you are in luck!! And after you use it, you will love it. If you had meat in the cans, it would need to can 90 minutes at 10lbs pressure. Don't try using a pressure canner without correct instructions. You can get a Ball canning book that gives all the info you need. All online, too, I bet. Don't be afraid to use one, though! I was at first, many years ago, but loved it after using it a season. Lots of things still can nicely in a water bath, too. Good Luck and sorry about all the open cans. I hate that~it feels like you worked your head off for nothing.