I like them a lot!
Review by Jules V. on 10 Jan 2025 review stating I like them a lot! When it's mid-winter and the relative humidity is especially low, I use these small instrument humidifiers in my acoustic guitar cases to supplement the soundhole humidifiers. I place them in the front of the cases, where they can help keep the fretboard in good condition. I like them a lot!
On D'Addario Small Intrument Humidifier PW-SIH-01