Police launched a Northland-wide campaign in May to stem a spate of beehive thefts fuelled by soaring demand for manuka honey.
It works by calling on members of the public to call *555 from their cellphones if they see any suspicious movement of beehives, for example if they are being transported late at night. Most legitimate movement of hives occurs around dawn or dusk.
Mr Milne said last week a member of the public reported a ute at Kaiwaka laden with hives late at night. Police were able to look up the vehicle's registration and found it belonged to a registered beekeeper.
"But that shows it's working. We've got information coming in from around Northland," he said.
The campaign was devised by Kawakawa police, particularly Constable Courtney Sandilands, and sees them working with the Beekeepers Association and other agencies. Police have access to a database maintained by food safety firm AsureQuality which lists the details, vehicles and beehive numbers of all registered beekeepers in Northland.