Wafers I guess is the most popular form to buy "Earth scent". Why? I mean why buy it? Isn't there enough "earth scent" on the ground where you hunt? Can't a feller just pick up a handful, rub it on, put it in your pockets? Wouldn't that work?

I wouldn't buy pine scent if I were hunting in a pine forest. I'd simply get some sap off of one of the trees and/or perhaps cut a few boughs to slip into my clothing box...