Only a quarter of Victorian national park users know campfires have to be extinguished with water, adding to the state's bushfire threat.
Parks Victoria asked 1000 Victorians whether a campfire should be put out with water or covered with soil or sand and 74 per cent selected the latter, incorrect answer.
"Once you light a campfire, you're legally responsible for ensuring that it is safe, does not escape, and is completely extinguished before you leave," Director of Fire and Emergency Services David Nugent said in a statement on Monday.