You don't "use" the soot sack, you simply walk around and the soot sack takes care of picking up the soot for you...don't take my word for it, just go back to the guy who gave it to you and see how much you've accumulated. :)
You just walk through the grass and it fills by itself.
collect soot using soot sack and exchanges for it
It is a key item used to pick up soot when you walk through the grass. You can exchange soot for prizes.
if it is like ruby, where to find the soot sack as I recall is located in a man's pocket and the person is... the guy in the house who turns ashes into glass objects
get a sack and fill it with vegetables
You collect it automatically when you walk through the sooty grass.
To use the Soot Sack in Pokemon Ruby you simply need to walk through ash covered grass in Route 113 and the Jagged Pass. The ash is picked up automatically and can be used to make some items at the Glass Workshop on Route 113.
.936 cubic feet
You automatically use it whenever you walk over the ash covered grass. The more you walk on the ash grass the more ash you collect.
no of course not
Soot's plural is soot.
Soot is often produced when burning wood.
You still have some soot on the very tip of your nose.