I've been buying the 5 pound plastic jar of Leisure time Dichlor for a couple of years now. In the past I've asked about the shelf life because it takes me nearly 6 months to use it up. When I first open it up, the chlorine smell is powerful and I know not to put my nose over it, and that smell diminishes over the months. This new jar did not have that and the granules are much larger than previously. They made some obvious change, but I compared the two jars and ingredients are identical. I wonder what's up?