Our diapers go through a vigorous washing regime. Over fifty steps including washes, rinses, soaks and flushes make up our wash cycle. We use oxygen based bleaching agents, natural deterents and disinfectants. Hot water kills all lingering bacteria and your diapers come out increadibly clean with the least amount of chemicals. The pH is naturally balanced at the end of the cycle to match your baby's skin. One thing to note is how difficult it is to remove zinc oxide based diaper creams. If you insist on using zinc oxide please purchase the Bummis Bio-Soft Liners to use with your diapers. We have our own Sweet Peach Bum Balm that works great on your baby and works great with our diapers. It is locally made with natural ingredients.