The expired food were distributed to residents at Mathuki dispensary in Mwingi central constituency last Friday.
But residents refused to take the food home after realizing it was expired.
The labels on the sacks indicated the food was to expire on December 1 last year.
When contacted, Ruto declined to comment on the matter.
Resident Mutava Musee said the relief food was delivered to Mwingi Cereals and Produce Board depot in June last year.
He said they cannot tell why the government officers would wait till the food expires to distribute it to residents.
Musee said the area was hit by famine at the time the food was delivered, but it was not delivered to them.
He said now there is no need for relief food, except only for the poor and elderly.
“We have plenty of food in our stores and are still harvesting. How can we be given expired relief food? This is shame," Musee said.
"I'm glad only a few old people had accepted the relief, but when they realised it was expired they returned it.”