Orijen would not be a food for your guy since he already has stool issues.
Iams & Purina are low quality foods. Not a fan of Royal Canin either, but, if his stools are somewhat better on it then....IDK....????
These are the items that most dogs have a sensitivity to: ANY chicken product, Grains, Brewer's Yeast, and Flax Seed so if any of those items are in the variety of RC you are feeding, that may be the source.
Has he had a Elisa test for Giardia?
He really needs a Digestive Enzyme and ProBiotic to help his gut.
I would order one of the two following items and get him started on it.
Sunday Sundae (Digestive Enzyme & Pro-Biotic Combo):
http://ineedthat.corecommerce.com/Sunday-Sundae.html
OR
Gut Sense: (ProBiotic)
GutSense - certified organic probiotic for dogs
You may want to consider Great Life by Doctor's Finest.
It has one protein source and other items he most likely has not had in his kibble before.
Great Life (Grain, Potato, & Pea Free):
http://www.doctorsfinest.com/Grain_and_Potato_Free_Buffalo_Dog_Food_p/gfbd.htm
- Single Source Protein
- US Ingredients
- No GMO's
- Gluten-Free
Buffalo, Tapioca, Jicama, Freeze Dried Buffalo, Freeze Dried Buffalo Liver, Freeze Dried Pumpkin, Freeze Dried Squash, Freeze Dried Parsley, Freeze Dried Papaya, Freeze Dried Chia Seed, Freeze Dried Kale Sprouts, Freeze Dried Broccoli Sprouts, Freeze Dried Barely Sprouts, Inulin, Suncured Alfalfa Meal, Yams, Blueberries, Cranberries, Parsley, Artichoke, Rosemary,
Probiotics Lactobacillus Acidophilus Fermentation Product Dehydrated, Lactobacillus Casei Fermentation Product Dehydrated, Lactobacillus Plantarum Fermentation Product Dehydrated, Bifidobacterium Thermophilum Fermentation Product Dehydrated, Bifidobacterium Longum Fermentation Product Dehydrated, Enterococcus Faecium Fermentation Product Dehydrated, Bacillus Subtillus Fermentation Product Dehydrated), Wild Salmon Oil,
Vitamins (Lecithin, Vitamin A Supplement, Vitamin D3 Supplement, Vitamin E Supplement, Vitamin B12 Supplement, Thiamone Mononitrate, Pyridoxine Hydrochloride, Riboflavin Supplement, Niacin Supplement, Folic Acid, Biotin), DL-Methionine,
Minerals (Calcium Pantothenate, Zinc Amino Acid Chelate, Iron Amino Acid Chelate, Copper Amino Acids Chelate, Manganese Amino Acids Chelate, Cobalt Amino Acids Chelate).
The Honest Kitchen Dehydrated Food would also be an excellent choice!
The Honest Kitchen | Homepage
Also stop all treats as there may be something in them that is upsetting his system. Use the dry kibble as treats.
Moms