The same precision technology we use in the music, electronics, medical device and food storage industries is available in a range of tobacco-related humidity levels to give you a number of zero-maintenance options to create your ideal aging environment. Based on your humidor quality and preferred humidity level – 65, 69, 72, 75 and 84% (exclusively for seasoning) RH levels are available. The life of any Boveda is based on how hard it has to work. When using the recommended 1 Boveda per 25 cigars the humidor holds (even if it isn’t full of cigars), they’ll last 2-3 months. And since Boveda will never humidify beyond the RH you’re using, there’s no such thing as “too much” Boveda.