I have a question for people who know about woody things. Long story short there were some railway sleepers large timbers to stop me falling down a steep bank at the end of the garden. After about ten years the sleepers rotted and were replaced. The old ones were placed nearby in the hope they would rot away, but this is not happening and just looks a mess. I do not mind a bit of a mess, if it will be beneficial to insects etc.
I could turn them over, and my question is whether insects and/or small rodents, snakes etc, would nest underneath. If the wood has rotted, I assume any preservative treatment has "gone", but is it still toxic to insects? I asked my neighbour and he thinks it would be okay, but I am not sure. What is more toxic, leaving them to rot in situ, or taking them to the tip, where they are likely to go into an incinerator.
What does the panel think?