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# For non-circulated, soaking, use 6 to 8 ounces per gallon of 180°F water (if using this product on plastics, heat the water that is mixed with the PBW to be as hot as the manufacturer of the plastics recommends), and soak overnight. Note that there have been reports of high concentrations of PBW breaking down PET bottles over time when soaking <ref>[https://www.homebrewtalk.com/forum/threads/pbw-and-plastics.521708/ Homebrewtalk thread reporting PBW breaking down PET bottles. 03/25/2013.]</ref>. For example, BetterBottle™ recommends using 5 grams per liter of 125°F water (0.67 ounces per gallon, or one tablespoon per gallon) of PBW and cleaned with agitation/circulation instead of soaking. They also recommend using an enzymatic cleaner such as Seventh Generation Free and Clear Natural 2X or Super Pro-zyme Enzymatic Cleaner instead of PBW <ref>[https://www.facebook.com/groups/MilkTheFunk/2104526149575588/ Better Bottle Cleaning and Sanitizing web article; downloaded from Archive.org.]</ref>.
# Rinse thoroughly with hot water (cold water may not remove some of the residual chemicals).
====See Also===
* [http://realbeer.com/jjpalmer/cleaning.html 'A Complete Guide to Cleaning and Sanitation" by John Palmer.]
* [http://howtobrew.com/book/section-1/brewing-preperations/sanitation/sanitizing-your-equipment "Sanitizing Your Equipment" by John Palmer (1st edition of How to Brew, so some information may be out of date).]
* [https://www.facebook.com/groups/MilkTheFunk/2104526149575588/ BetterBottle Guide to cleaning and sanitizing PET.]
==Quality Control==