Not useful at all
I travel a lot and thought this would be wonderful to use when I rinse items out in the sink in a hotel.  Forget using just one tab.  You'd have to use the entire lot just to get some soap bubbles going.  Very disappointed in the product.  I thought that since it was compact, it would be a perfect traveling item.  I will stick with the Tide packets...that are also compact, and have much better cleaning power.
Rating: 2 stars