It's a little different from most of the gluey slush in the streets...
[A WARNING! This will melt when winter passes! Use it soon.]
It's noticeably different from most of the 'snow' in the streets. It has an oilier lustre, and the smell is not quite the same: ammonia, but touched with oil of roses. There is no indication at all that the stuff is safe. The wisest thing to do would be to dispose of it.
So what will you do?
[A WARNING! This will melt when winter passes! Use it soon.]