The illegal laying of gin traps in the Redwood Forest has been described as "madness" by a district councillor, while forest users are being warned to take extra care while walking the popular trails.
Members of the public spotted the traps, used to catch possums, near main tracks in the forest and alerted Rotorua Lakes Council staff who then found and removed three of them.
Council sports and recreation manager Rob Pitkethley said staff were very concerned about the discovery.
"We've searched the area thoroughly and haven't found any more but we can't be sure so as a matter of public safety we urge people to be careful and keep their children close and dogs on short leads.
Whoever has done this has obviously given no thought to public safety - it's a crazy thing to have done