When used correctly, a pad saver can help increase the life of your flute’s pads. They work with the help of an impregnated desiccant which draws extra moisture from the pads’ surface. You should use the pad saver after cleaning your flute with a rod and gauze, and not as a substitute.  Store it inside your flute body while it’s in its case, and it will help to reduce condensation when moving from warm to cold environments, too.