"Shower-stealing" freedom campers who have been sneaking into holiday parks around the country to use the facilities without paying are infuriating park owners.
As the tourist season takes off, holiday park owners are struggling to clamp down on travellers in campervans sneaking in to use their facilities.
The Holiday Parks Association said it received daily complaints about the problem from parks, including those in tourist hotspots Rotorua, Taupo and Northland, and it could cause stressful situations.
"It can get people into very heated situations - on both sides. It's one which is very difficult to handle," chief executive Fergus Brown said.
Offenders were usually young people travelling in vans that were not self-contained, he said.