Ok so it gone like this : Me : I red on some forums that I could save a lot of money by switching from PBW to Oxyclean Free. Do you want to go to Walmart tonight? Him : You mean the cloth cleaner? Hum, there's no way it's food grade. Me : I don't think PBW is neither. Him : Well, I don't think you're right. Like dish soap, PBW must be somewhat similar in terms of food regulation. …

I typically accumulate a lot of commercial bottles because I have a hard time tossing out a non-twist-off beer bottle (it is an obsession and I've promised my wife I'll seek help). I will clean them by filling a 5-gallon bucket with a PBW solution and soaking the bottles in batches of about a dozen (it cleans them up and takes the labels right off). Obviously the PBW solution gets dirtier with each batch. One can monitor the efficacy of …