Yes, basic cleaning and sanitation will take care of any bugs. Souring bugs are everywhere around us...in your house, your yard, on counters in your kitchen, etc. Even your bottles from non-sour brews have bugs on them. That's why you have to clean and sanitize. There's no reason to throw them away if you sanitize well. I usually run all my bottles through the dishwasher (minus soap) on the sanitary setting.