A call tonight for day trampers at Aotearoa's most popular national parks to pay their way; in the wake of poo pile up that's seen DOC close the track to some people. The toilets on the Mueller Hut Route on Aoraki Mount Cook are almost at capacity with DOC now urging day trippers to stay away. People who've booked the hut are still welcome. Now, one of the country's most experienced mountain guides says more people need to pay to access popular tracks, to help pay for facilities like loos. Charlie Hobbs speaks to Lisa Owen. [embed] https://players.brightcove.net/6093072280001/default_default/index.html?videoId=6347182180112