Product review (4 stars): Good filter. You need to know the trick to keep it running longer
I've been using honeywell humidifier for a couple of years now. It's said you have to buy the cleaning cartridge to use along with this filter to prevent the growth of germs and fungi. I've figured out a cheaper and easier way. All you need is to pour 2 table spoons of oxiclean colorsafe bleach powder into the tank when you install a new filter. It will keep the system germ free and fungus free for a good 30 days or even longer. In fact, I've been running on average between 50 to 70 days before I have to change the filter.
Reviewed by staff at [...]