Another solution to the humidity-control problem is Music Sorb, a non-toxic silica gel that naturally absorbs excess moisture from the air during humid times and releases it during times of dryness. It comes in packets or pouches sold through piano technicians. Enough for a single piano costs $65 to $70 and must be replaced once a year. Music Sorb probably won't control humidity changes in the piano quite as well as a Dampp-Chaser system, but may suffice in less severe climates, or in situations where plugging in and maintaining such a system is out of the question—or until the piano owner can afford the larger initial outlay of funds required for the system.