On 20/06/16 23:19, Les Newell les.newell@... [Homebrew_PCBs] wrote:
>It makes excellent weed killer.
> Don't get it anywhere near a septic tank. Copper is really good at killing
> bacteria. Mixing it with cement or dry-mix concrete will neutralize the acid and
> tie the copper up in a solid block which can be disposed of in the bin. If you
> keep cement in a well sealed container it will last a long time so one bag will
> last you for ages.