Square milk jug

[1] The design was introduced in the summer of 2008[1] and is marketed as environmentally friendly because of the shape's advantages for shipping and storage (better cube efficiency).

[3] Critics of square milk jugs have noted increased spillage and difficulty pouring.

[7] The wide mouth is also easier to fill which reduces the likelihood of spillage and the sanitary issues caused by milk getting on the container.

[3] Concern was also raised on the issue of the narrower base of the square jug, which allows it to be stored in the door of many refrigerators.

Milk stored in this area may be more prone to spoiling due to frequent drastic changes in temperature.