Deputy director general of the ministry, Andrew Coleman, was in Whangarei yesterday to update stakeholders - including the horticulture industry and iwi - about the operation.
He said he was amazed at the response of locals.
"We've had a huge, huge success, particularly with the drop-off bins, and so far there's been very few people who have objected to the restrictions.
"The community up here have been very positive in supporting [the biosecurity operation]."
Mr Coleman said if no more fruit flies were found by the end of tomorrow it was likely the biosecurity response would be called off.
"We have to wait two weeks from checking of the traps we set up after the initial find. That's the international standard and will take us to the end of Friday," he said.