For all types of divination, plants have been worked with to prepare divination spaces, objects and the person doing the divining work. This concentrated spray is made specifically for this work. One spray is enough. 

I recommend saying your dedication out loud as you use the spray. Something simple works fine, "I dedicate this space, these cards (or other objects) and myself to _____________ (whatever you call your divination work).
 
If you work with vessels of water for divination, try one spray over the water. For scrying stones spray, let sit for a bit then wipe into stone with a cloth.
 
Works well in between readings to reset the space.
 
Runes shown not for sale. Product is a ritual plant spray.
 
Made with ritual, whole plants, special waters and spirits. No strong smells, no essential oils used.