
I use Applaws small/med dog food as treats, 70% meats and 25 veg so no grain or additives, They are small so I can give 3,4,5,etc straight off and he still has less than 1 gravybone, also used lovejoys or vitalin grain free for same purpose, as they are all kibbles they don't crumble.
I buy a box of (I think its called) Ranger Davis beef jerky to give when I go out and he is left or if he is shut in his crate (non-dog visitors) etc, I break that into smaller pieces and store in plastic lidded tubs as its quite pongy!
They sell packets of it in some pet shops but a box works out about 1/3 the price per 100g