“Consumption of milk per capita has gone down every year over the last 30 years,” says Sylvain Charlebois, director of the Agri-Food Analytics Lab at Dalhousie University. “Actually, it’s gone down by more than 20 per cent since 2015.”
While bagged milk is often cited as a unique Canadianism, it’s actually not sold west of Ontario. Those who prefer it, however, say it’s more cost efficient and some even believe it tastes better.
The cost to make and recycle carton cardboard polymers uses more resources than bags. Bags are found to be the most environmentally friendly. https://www.dal.ca/news/2021/11/29/milk-jugs--cartons-or-plastic-bags---which-one-is-best-for-the-e.html