M**O
Very easy to use and throw in your guitar case
Happy with using these humidifiers. Just have to re-wet them every few days or once a week depending on how dry the area is where you are. Easy twist off cap and remove the sponge to re-wet (Distilled water only). Let em soak for a bit and drain the water from sponge and put back in case. Keep guitar case closed to ensure it keeps the humidity in the case. Great option to use if you are concerned with keeping the humidity of the guitars wood in shape.
L**R
Does the job, but not as efficiently and safely ...
Does the job, but not as efficiently and safely as the sealed Boveda/Planet Waves humidipacks. The threaded plastic holder that's supposed to attach to the to of the case has sometimes not held. The pod the falls on the top of the guitar. Truly the potential for instrument damage.
J**N
Needs to be soaked in filtered water about every week
Works wonderfully keeping my acoustic guitars humidified here in the Las Vegas Desert. Great system for the money.
S**S
Great
Easy to use!
