How do I get my puppy to stop eating rocks?

Maybe you can try bringing some rocks inside your house and spraying them with bitter apple spray and putting them in front of her. She will see the rocks and try to eat them as usual, but will be repulsed by the bitter apple taste and spit them out. You can also bring her out and quickly spray the rocks in a certain area with bitter apple and then take her there to help her understand that outdoor rocks taste bad as well. Repeated attempts at this should shake her desire to eat rocks, hopefully..