Since 2002, the Rockies have stored baseballs in a humidor in order to prevent the balls from drying out and creating those high-scoring affairs the Rockies were known for back in the 90s. Back in 2007, Troy Renck of the Denver Post wrote an article on the humidor and had some quotes from Jimmie Lee Solomon, Major League Baseball's executive vice president of operations, stating his belief that down the road other teams would ask to have a humidor installed in stadiums.
↵Move ahead to 2010, Troy Renck now reports that the Diamondbacks are looking at a humidor as one possibility to help build a winner out in the desert:
↵↵↵It's not the heat, it's the humidor. The Diamondbacks, looking for ways to level the playing the field for their pitchers, are considering installing a humidor at Chase Field. They are also talking about moving the walls back, anything to turn their ballpark into something less than an arena-football yard.
↵
However, Renck cautions that the effects of installing a humidor are unknown because the altitude of the stadium is nowhere near that of Coors Field, around four thousand feet lower.
↵But if the Snakes do install one, I doubt they'll be accused of cheating and using different balls for when the home team is at the plate.
↵