Product review (1 stars): Total waste of your money
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.