just got a couple cases of used bottles. What is best to wash with, prior to sanatizing? Whoops! Never mind, started searching and found more than enough info on other posts. I believe some PBW should do the trick. May give them a boil such as sanatizing canning jars as an added safety. Not sure used bottles are worth the effort! If they were new bottles that I used and rinsed I wouldn’t be as concerned, but these are bottles with an unknown history, although they come from a local winery.