The longevity of a chalk ball can vary depending on factors such as frequency of use and personal preference for chalk application. Generally, a chalk ball can last for several months to a year or even longer. How quickly you go through a chalk ball will depend on how often you climb, how much chalk you use per session, and the size of the chalk ball itself.
As the chalk ball is used, it gradually depletes, becoming smaller and less effective. You may notice that the ball feels lighter and there is less chalk being dispensed. Eventually, the chalk ball will need to be refilled or replaced.