Many of St. Mary's partners also participate in special campaigns. The annual "Fight Hunger. Spark Change" is one such campaign, where Walmart Inc. employees work with local volunteers to distribute meals from mobile food pantries across the state. Additionally, Walmart and Sam's Club donate a predetermined amount of money to St. Mary's when customers buy select items in stores. In the 2018 campaign, St. Mary's received enough money to distribute 1.67 million meals across Arizona.