“Leave it” success, outside? 😱

Has anyone had success with leave it, outside? I’m going crazy. From eating rabbit poop and digesting it, twigs, leaves I don’t mind as much… but gravel, ice melt she seems to leave alone, but licking puddles… I’m getting pissed. My training has been indoors and she has been pretty good at leaving things that I drop on the ground but if she finds something on her own, you bet she will gobble it up.

Any training that has worked for you?