You need to keep doing this and doing it. It took me about a week of doing this each evening and a whole load of treats – mostly eaten when not supposed to be.
I can now put a treat on Nachos paw (when he is in down position) and he doesnt touch it until I say “on you go” Lots of damp patches on carpet from saliva though ;D
Need to up criteria though cos if outside and he puts something edible in mouth sometimes he ignores my request!! If it is not edible then it is left!! Food fixated mutt.
I enjoy the touch one better – favourite party trick.