Use a pint (2 cup) jar, container, or pot to combine scent waters. Add ingredients to container, cover with water, and choose from these options: --simmer on stove top, topping off with more water as it evaporates --add heated mixture to a slow cooker, fondue pot, or something similar that will keep mixture heated. Preheat waters to a boil (in microwave or on stove top). As water evaporates, always top it off with HOT water to keep the temperature as high as possible. Higher heat = more fragrance.