"Mister Prime Minister, it's cheaper to wash your car with milk than it is with water," he said, holding a placard and a bottle of milk.

Mr Miller was ushered away from the car by a man in a suit, and addressed the media, while the PM's motorcade left Nowra.

"We have to have a change, we need a Prime Minister who listens to us," Mr Miller said.

"He said he doesn't want to see the price of milk go up, but yet everything else has gone up.

"The price of cornflakes has gone up 50 per cent, bread's gone up 50 per cent, milk hasn't moved in eight years.

"Labor's come out and set a floor price, let's have a retail price where farmers get a fair price, at least $1.50 per litre. We do a decent day's work, let's have a fair price."

In town for the opening of Warren Mundine’s office, Prime Minister Scott Morrison addressed the media briefly, and, unwilling to take questions, retreated into the office with Liberal Party faithfuls.

Mr Morrison had drawn quite the crowd at Jellybean Park on Friday.

Seniors stopped, interested in the commotion, workers from nearby businesses had a stickybeak, a group of Shoalhaven dairy farmers showed up to have their say, and refugee advocates who have quietly protested outside of Ann Sudmalis’ office every Friday for years walked down, placard in hand to join the crowd.

Mr Miller was incensed by Mr Morrison's apparent indifference on Friday.

"The PM wasn't even interested in us farmers," he said.

"It's about mining and big business. It's about time the Liberal Party and [Warren] Mundine got out there and listened to us farmers."

Minutes later, Shoalhaven dairy farmer Daniel Cochrane joined the media pack around the Liberal candidate for Gilmore, and put his concerns to him.

"One of the ideas discussed with the National Party yesterday was the idea of a Royal Commission into the fresh food industry and the divestment of Coles and Woolworths, Scott Morrison came out and said he would divest power companies to make power cheaper, the National Party is on side, would the Liberal Party support a royal commission and divestment of supermarkets?" Mr Cochrane said.

Mr Mundine offered to sit down and have a conversation with local dairy farmers about the matter.

"I can only speak for Warren Mundine, my stance is, we have to stop screwing the dairy farmers," Mr Mundine said.

"We need the dairy industry, we need it to be thriving, there's nothing worse than it collapsing and having to import from overseas."

They shook hands, and Mr Cochrane said he looked forward to future discussions with Mr Mundine. 

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