Forum username: Bad Doc Date: 16 Jan 2010 Review: Kyser Humidifier Rating you give the Kyser Humidifier: 4 - Highly recommend it
Likes: Very simple to use and well- priced. Sure, it's a tight fit. That's the whole point. So slip one side under the sound-hole and then gently push other side under too.
Dislikes: None
Additional Comments: It's soft plastic, almost rubber. Also acts like a mute if you keep it in place while playing.
Forum username: flintsghost Date: 06-02-09 Review: Kyser Humidifier Rating you give the Kyser Guitar Humidifier: 1 - Save your money
Dislikes: Unlike earlier versions I used for years, it didn't fit the sizes it claimed to fit and was not useful in any soundhole.
Additional Comments: Messy to use as always and can damage the finish near the sound hole if not careful.