What I Like:It does work. Also, Moss B Ware can be mixed with water at the rate of 3 pounds of product to 5-10 gallons of water, killing moss over 600 square feet, though this negates the visual-tracking properties of granular-based moss killers.
What I Don't Like:While dusting my roof with Moss B Ware, the lid came off. Literally half of the product spilled in one place, and it was difficult to sweep up as it has a very cake-y consistency.
Was the lid problem an aberration, a one-time-only thing? No. Foolishly, using the next can, I forgot to hold the lid (or secure it with duct tape), and it came off again. Fool me once, shame on you; fool me twice...
The next problem is that it's difficult to spread. It's a fine powder that cakes up inside the container, requiring vigorous shaking. Then, once it comes out, it is difficult to aim because it floats away.