Dairy farmers in Waikato have been warned to watch for suspicious vehicles on their farms after thefts from milk vats.
There have been reports of stolen milk in Matamata and Waihi in the past two weeks.
Federated Farmers says the milk would not have been stolen for supply, but more likely to feed calves.
Waikato president James Houghton says vats are hard to secure from robberies, but farmers should be vigilant to protect their milk.
