Product review (4 stars): ReliOn filters
I use a sleep apnea device and have issues with 'dry mouth'. Using a humidifier helps a lot with keeping the air near my bed cool and moist. These filters are consistent in staying wet and they last a long time with regular rinsing. I've found that if they are soaked daily there is no odor lingering in them. Also, they work better if they are super wet when putting them in the appliance.