We give ares thoes green teeth chews to clean there teeth rather than bonios...
Good value from Coscos at the moment and butchers tripe
I tried Jarvis with a greenie once (if that's what you mean) and never again - he threw it up within half an hour and the pieces that he threw up were swollen up to 4 times the size that they were when he swallowed them. There are also documented cases of dogs choking on greenies and dying so never ever feed them without full supervision and always provide water. They're not something I would give at bed time 
Should i informed pedigree pet foods who makes them if they are that dangerous...Sounds rely bad!!!!!They are still advertising them on T.V at this very moment...
We have always waited for them to Finnish them of be for we go to bed...
It's your choice - personally with this list of ingredients I prefer to give my dog raw bones if I want to clean his teeth:
Gelatin, Wheat Protein Isolate, Glycerin, Soy Protein Isolate, Sodium Caseinate, Natural Poultry Flavor, Hydrogenated Starch Hydrolysate, Vegetable Oil (Preserved with Propyl Gallate), Sodium Tripolyphosphate, Lecithin, Ground Flaxseed, Calcium Carbonate, Magnesium Monostearate, Monoglycerides of Edible Fatty Acids, Choline Chloride, Potassium Sorbate (A Preservative), Minerals (Magnesium Oxide, Zinc Sulfate, Ferrous Sulfate, Copper Sulfate, Maganese Sulfate, Potassium Iodide), Vitamins (dl-Alpha Tocopherol Acetate [source of Vitamin E], Vitamin B12 Supplement, Calcium Pantothenate, Niacin Supplement, Vitamin A Supplement, Riboflavin Supplement, Vitamin D3 Supplement, Biotin, Pyridoxine Hydrochloride [Vitamin B6], Thiamine Mononitrate [Vitamin B1], Folic Acid), Chlorophyll.
I don't think gravy bones are quite so laden with indecipherable ingredients.....
