Last week, a New South Wales farmer put this letter on the Facebook site of the supermarket that initiated $1 a litre milk.  It went viral with around 73,500 facebookers giving it the thumbs up.

"Your $1 per litre of milk deal is killing the lifeblood of our dairy industry. The ramifications of it are finally rearing their ugly head. Dairy Farmers has announced its price for Tier 2 milk at 13 cents per litre. This is not sustainable in an industry where costs of production can be as high as 30 cents per litre.

The consumer is paying $1 a litre and the only winner here is the supermarket. It is time for us to go back to the old fashioned way; in which we bought real milk that tastes like milk; no permeate and where our fruit and vegetables were grown in our beautiful country. Stocking garlic from China, Argentina. What is going on?

Obviously it is cheaper to buy it from overseas then from our country; grown in God knows what. And for our farmers and the towns they support and encourage capital growth; it is heartbreaking.

Your latest ad campaign sprouting that you support Aussie growers in insulting. You are misleading the public in how you support Aussie growers. Not only have you ruined the fresh milk market but you have also lowered the price on your cheese and butter. The only winner here is you.

Eventually all the Aussie growers you so called support will be out of business. Dairy farmers who work 7 days a week, 14 hours a day, who have been dairy farming their whole life, whose cows are their whole life will have to stop farming as it is no longer economically viable to continue. Our "fresh"produce will be flown in. The consumer will be stuck buying expensive, overseas produce. What will happen to our economy and our country towns?

I urge people to think about what they buy. The more Australian made produce we buy, the more our money stays here and benefits us. Your $1 milk is a nail in an already suffering coffin. I am ashamed to watch your ads and us farmers burn in resentment when we do so."