Product review (1 stars): The Ingredients is very similar and people seem very happy with both
1 QT @ $5.40 for Essick Air 1970 Humidifier Bacteriostatic Treatment, 1-Quart
1 QT @ 19.70 for Sunbeam Humidifier Bacteriostat Solution 32

Essick = 1/6 fl oz per gal = 5ml per gal (rounded up)
Sunbeam = 16ml per gal

So Essick is a third of the price and lasts three times longer !

Am I missing something ? The Ingredients is very similar and people seem very happy with both.