A dozen students and two adults were served floor sealant instead of milk at a day care summer program at an Alaska elementary school.
Juneau school officials say several children complained of burning sensations in their mouths and throats, and at least one child was treated at a hospital after the Tuesday morning incident.
They say it appears the milk and floor sealant both come in plastic pouches stored inside cardboard boxes.
Somehow both were put on the same pallet and delivered to the school.
The sealant was put into the milk dispensing machine by accident.
District officials say police are investigating, and that other than some upset stomachs, the children seem OK.