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peteradio on July 26, 2023 | parent | context | favorite | on: People over-emphasize the recycling aspect of "red...

Most treated lumber sold to consumers is copper based, I think that is generally accepted in the States for organic farming. Is it not where you are?

prawn on July 27, 2023 [–]

I think treated pine sleepers in Australia are mostly CCA (copper chrome arsenate). For garden beds, lining with plastic is usually advised. The less common (?) alternative is ACQ - alkaline copper quaternary.

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