Buy Hunter 31960 Demineralization Tablet for 31004 Humidifier

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I purchased these because they were advertised to reduce the white dust that's endemic to ultrasonic humidifiers. After a couple weeks of use, the dust was in fact made worse. Furthermore, it caused the vapor to actually hang in the air so that there was a slight haze in the room. I suspect the tablets are mostly salt as used in any water softener, but there is no ingredient list on the packaging or anywhere else I could find on the internet. I suspect the tablets are only good for preventing the white minerals that builds up on surfaces INSIDE the humidifier (this happens with any humidifier type). It does nothing for the minerals that are vaporized and put into the air that later settle down all over one's furniture. Perhaps their performance is related to water hardness--but mine is not particularly hard. Exceptionally disappointing-I'm still looking for a solution.

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I have a The Sharper Image EV-HD10 Cool Mist Ultrasonic 1-Gallon Humidifier with Clean Mist Technology and this tablet really only lasts for one gallon. I haven't been totally convinced that it helped with white dust but it seems to have helped kill any musty bacterial growth, which is good enough for me.

It might prolong the life of the humidifier or decrease smells and mineral buildup, but it does not eliminate white dust. Don't buy it if your goal is to do that.

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The demineralization tablets packaging states it "eliminates white dust" amongst other claims. They not only fail to eliminate the white dust, using them in my humidifier created even more white dust. I emailed the Hunter company and explained my dissatisfaction with their product and the only response from Hunter was that "the tablets were not tested or approved for humidifiers of any other manufacturer" than Hunter. I responded back to Hunter and advised them that their packaging does not indicate they may not work in other brand humidifiers.

Therefore, if you own an ultrasonic humidifier that is not Hunter's brand, my advise would be to not waste your money on these tablets.

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I bought these tablets because we had been seeing some white dust on furniture and such, when using a cool mist humidifier.

After filling the tank and placing one tablet in the tank, I noticed that it dissolved in minutes not a week. I was careful to place in the tank AFTER it was done filling with water. So then after doing this and letting the unit run, we noticed a haze in the house. Not just some white dust but our house filled with a white haze. The white residue from these tablets is a whole lot worse than the white dust that comes without using these.

They were expensive considering they lasted for only 1 tankful of water. And the dust they created will be forever to get rid of.

Don't make the same mistake I just made......use distilled water or something else not these tablets.

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I put in 3 of these tablets into my ultrasonic humidifier. I thought this would allow me to use regular water instead of distilled. Wrong. The tablets had ZERO effect. White dust everywhere. Complete waste of money. There ought to be a law against selling completely useless products.