As in car anti-freeze, is reputed to be very useful for stopping wet rot in wood - allowing it to be then successfully repaired. I need to kill the rot in a wooden window sill to enable it to be repaired, but I don't seem to have any in my garage. The sale of it seems to have been stopped in car accessory sops and the chemists refuse to sell it.
Are there any other likely sources, or has it been completely banned?