Fireworks, food wrappers and condoms were among the bags of rubbish removed from the Sulphur Bay wildlife refuge by volunteers and businesses this week.
Staff from Polynesian Spa, Millennium Hotel and Shine PR each attended the event which was organised as part of Conservation Week 2015 and was supported by the Rotorua Lakes Council and the Department of Conservation (DOC).
The wildlife refuge is home to native bird species including the naturally uncommon black shag.
DOC ranger Caraline Abbott said it was all about creating a more welcoming environment for visitors and improving areas for local people and wildlife.
"Unfortunately, these birds are affected by human activity such as littering. Items like plastic bags and condoms pose a risk to the threatened birds found around the bay. There could be serious consequences for these birds if they ingested litter," she said.