OMAHA, Neb. (AP) — Thousands of cartons of milk unused by Omaha public school students have been donated to a homeless shelter.

Trucks from the Open Door Mission went from school to school Wednesday, picking up milk and hauling it to the shelter. It will be used as part of the mission’s Kids to Kamp program, which provides meals and snacks to homeless children.

The donated milk that isn’t served before its expiration date will be frozen for use in future meals.

Hiland Dairy saleswoman Sharon Schaefer told the newspaper that it’s impossible for schools to order the exact amount of milk. She says that, for health reasons, Hiland can’t resell the milk, but the district gets credit on future purchases for the milk that’s donated.