Recently sold a humidor to condition baseballs for the White Sox. MLB has a spec on temperature and humidity. Why condition the balls if they are going to be used anywhere from 2-3 hours from start of the game. Note: Arizona and Colorado were the first to have the walk-in rooms in place. Anything to do with reducing juiced baseballs? Too date both Red and White Sox bought in. Cubs had no interest but Brewers decided to build their own box.