i use it to paint fences and sheds works a treat also as bonfire starter all good
That's a great idea - I don't have fences and my shed is so old it was creosoted very thoroughly "old-school" before I got it, but I do have raised beds - and most of the wood came (and still comes) from skips - and most of that dates back before tannalising was standard.
I would benefit from using a sustainable preservative on the side in contact with the soil - cooking oil fits the bill - but I'm too lazy to paint it - I need to make a 2.5m x 20cm trench lined with plastic so I can soak my next batch of replacement timbers. It will need a good cover too (in this weather...).
I might even eat healthier from not re-using the oil until it's brown - now there's a way to not waste it.
Cheers.