Boveda works automatically (& solo) — so there's nothing else to add
No more adding water to sponges, hoses, or discs. No more risk of moisture puddling inside your instrument. Boveda eliminates the hassle (and danger) of one-way humidification methods. These methods spike humidity when you add water, and take a nosedive as the water evaporates.
Boveda is pure water and natural salts sealed inside a leak-proof membrane. Boveda adds and absorbs water vapor slowly and precisely to achieve and maintain an RH level between 40% – 60% in your instrument’s closed case.