how to clean a white D&M decker patent catchers mitt

this goes out to all of the gurus out there. i recently picked up a white D&M major league model decker patent catchers mitt. huge mitt 12x11.5. before i start cleaning this beauty, i want to know the best techniques for cleaning white gloves. ive always used saddle soap and bicks 4 leather conditioner, but those two combined just dont seem to get as white as id like and from reading posts in the past, i think im using the wrong stuff and dont want to ruin the gloves character. i saw the tornado white catchers mitt recently posted and how white that got after the cleaning. i would love to hear what products best cleans white gloves before starting the process. thanks in advance for your replys.