Share '9 month puppy eating his and others poo'

Any advice on this disgusting habit Harvey has would be greatly appreciated as my title says Harvey's eating poop and he's not always fussy who's he eats its disgusting if I catch him and shout at him he stops but if I am not their I know he's done it as there are tell tale signs it's spoiling our walks as if he's any distance from me and I shout he tries to eat it before I can get to him in the…