Product review (5 stars): This is the answer - no more strong chemicals and elbow grease to clean my humidifier
I use a warm mist 1 gallon humidifier and have always dreaded all-too-frequent cleanings. The heat module is difficult to get to and the buildup is so hard and difficult to break up. The buildup also makes annoying noises that can make sound sleep difficult. I spent the time to clean the heat module thoroughly before using the capsule. Since I started using the capsule I have been able to run the humidifier more than twice as long as between cleanings. The buildup is very light compared to before, making routine cleaning easier than ever. I have been using my first capsule for about a month now and it is still working well (I've been using the humidifier mostly at night only so I can't say how long they last yet.)
A side benefit is that it is antimicrobial, which is reassuring that I'm not going to have to worry about mold an bacteria.