Product review (4 stars): Check the quantity and size before you add to cart.
I didn't look at the quantity or price of the item I was ordering since I had previously bought what was at the time the only listed size and quantity. So you can imagine my surprise when instead of the single smaller jug I ordered 2 years ago, I got 2 big jugs of the stuff. Could have returned, but I need my humidified 6 months out of the year and won't be moving any time soon. Now I'm set for about the next 6 to 8 years.