In my garden there is a wall that was been constructed from old wooden railway sleepers. Several of these seem to be leaking tar which has then coated them, and in warm weather the tar becomes almost liquid and is easily transferred to clothing and skin.
Since I live in rented accommodation my options are obviously limited, but is there any treatment I could apply that would seal in the tar and prevent it from coming off the wood and onto my toddler?
(I have no idea what to tag this as, so please feel free to edit)