Hi It's hard rubbish collection time in my neighbourhood (my favourite time of year!) and I scavenged some old timber fencing from the side of the road. Thought it'd be good for building some more raised beds. Wondering if it's likely to be treated pine? Initially, I thought not, but last weekend my husband went to buy some new palings to repair a section of our back fence, and my dad helped him and told me that it was treated pine (although lightly treated). Apparently you can tell because the wood has a greenish tinge in some areas (that's the arsenic). The cut-up palings I collected are old and discoloured and it's hard to tell. I don't know if fencing has traditionally always been treated or whether it's a newish thing. Anyway, I don't want arsenic leaching into my garden. Do you think it's safe?