Royal Canin Veterinary Diet Urinary SO Olfactory Attraction Dry Cat Food, 7.7-lb bag

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This prescription item requires vet approval. Details


Keep your favorite feline happy and healthy with the precisely formulated nutrition of Royal Canin Veterinary Diet Urinary SO Olfactory Attraction Dry Cat Food. Created specifically to help manage lower urinary tract and bladder health in adult cats, this prescription feline dry food also has the added benefit of using a high aromatic profile to attract even picky eaters, helping to ensure that this healthful food is consumed and able to assist in managing lower urinary tract disease in cats. Formulated by veterinarians to increase urine output volume and prevent the formation of struvite and calcium oxalate crystals, this urinary health kibble is also highly digestible and provides the complete and balanced nutrition that adult cats need to live a happy and healthy life.

Key Benefits

  • Provides complete and balanced feline nutrition with the ideal mix of protein, fiber, and other essential nutrients.
  • Promotes a healthy urinary system with Royal Canin Urinary S/O Index® to prevent the formation of harmful crystals.
  • Exclusive formula is crafted with raw materials to create an aromatic profile that attracts even the pickiest of eaters.
  • Developed by using low RSS (relative super saturation) method for cats prone to both struvite and oxalate urolithiasis.
  • Uniquely formulated by veterinarians to support feline bladder and urinary health while stimulating cat appetites.

This product requires a veterinary prescription. Simply provide your vet's information during checkout and we'll follow up to confirm the prescription, or email a copy of your prescription to rx@chewy.com and we'll get your order out right away.

See all items by Royal Canin Veterinary Diet

  • Item Number
  • Weight
    7.7 pounds
  • Brand
    Royal Canin
  • Food Form
    Dry Food
  • Lifestage
  • Made in
    United States
  • Special Diet
    Prescription Food

Nutritional Info


Fish Meal, Brewer's Rice, Corn, Wheat Gluten, Powdered Cellulose, Corn Gluten Meal, Natural Flavors, Chicken Fat, Pea Fiber, Salt, Potassium Chloride, Calcium Sulfate, Vegetable Oil, Dl-Methionine, Sodium Bisulfate, Fructooligosaccharides, Taurine, Calcium Carbonate, Vitamins [Dl-Alpha Tocopherol Acetate (Source of Vitamin E), Inositol, Niacin Supplement, D-Calcium Pantothenate, Biotin, Pyridoxine Hydrochloride (Vitamin B6), Riboflavin Supplement, Thiamine Mononitrate (Vitamin B1), Vitamin A Acetate, Folic Acid, Vitamin B12 Supplement, Vitamin D3 Supplement, Menadione Sodium Bisulfite Complex], Choline Chloride, Trace Minerals [Zinc Proteinate, Zinc Oxide, Ferrous Sulfate, Manganese Proteinate, Manganous Oxide, Copper Sulfate, Copper Proteinate, Calcium Iodate, Sodium Selenite], L-Carnitine, Rosemary Extract, Preserved with Mixed Tocopherols and Citric Acid.

Caloric Content

3, 308 kcal/kg, 284 kcal/cup

Guaranteed Analysis
Crude Protein 30.0% min
Crude Fat 9.0% min
Crude Fiber 9.0% max
Moisture 8.0% max

Feeding Instructions

Weight Tendency to Become Overweight Daily Feeding (cup) Ideal Weight Daily Feeding (cup)
4.4 lbs 3/8 3/8
5.5 lbs 3/8 1/2
6.6 lbs 1/2 1/2
7.7 lbs 1/2 5/8
8.8 lbs 1/2 5/8
9.9 lbs 5/8 3/4
11.0 lbs 5/8 3/4
13.2 lbs 3/4 7/8
15.4 lbs 7/8 1
17.6 lbs 7/8 1 1/8
19.8 lbs 1 1 1/4
22.0 lbs 1 1 3/8

Feeding guides are general recommendations only. The amount of food required by your cat may vary above or below that listed in this feeding guide. It is recommended that your cat be fed 2 - 4 equal portions of the diet per day.

Ensure fresh drinking water is available at all times. Store this product in a cool, dry place.

Transition Instructions

We recommend at least a 7 day transition before you begin feeding the new food exclusively. Start by mixing 75% of the old diet with 25% of the new diet on Day 1 and Day 2. On Day 3 and Day 4, mix 50% of the old diet with 50% of the new diet. On Day 5 and Day 6, mix 25% of the old diet with 75% of the new diet. On the 7th day, you can feed the new food exclusively. This allows your pet’s digestive system to smoothly adapt to the new food.


Frequently Asked Questions

How are Royal Canin diets preserved?

All of our dry diets are preserved naturally with mixed tocopherols, citric acid, and rosemary extract. Our canned diets are naturally preserved and sterilized during the cooking and canning process.

Where do the ingredients in Royal Canin diets come from?

We select our ingredients based on multiple factors, including the supplier’s compliance with our quality and food safety requirements, consistent availability, and on the nutrients required to meet the dietary needs of the pet.Royal Canin is making strides towards sustainability by attempting to obtain sources of raw materials as close to each manufacturing facility as possible. In some cases, we use international suppliers, because only those suppliers can offer raw materials that comply with our quality and food safety standards.

Why do some Royal Canin diets contain by-products?

Royal Canin chooses ingredients because they deliver high-quality nutrients that support our customized pet food formulas. Using chicken by-product meal instead of chicken meal for example will allow Royal Canin to maintain its highly customized nutrient standards while achieving a more secure and sustainable supply.

Why do some Royal Canin diets contain grains?

Grains can be a healthy part of any cat or dog’s diet. As always, we focus on the nutrients each ingredient provides and grains can provide many important nutrients.

How do you ensure Royal Canin diets are safe for my pet?

Our Quality and Food Safety systems are state-of-the-art and we continue to invest heavily in new technology to make sure they remain that way.* We put our suppliers through a rigorous selection process that doesn’t end with our first purchase.* We monitor every load delivered to our plants to verify the safety and quality of the ingredients we use to make pet food.* We perform tests on finished pet foods before they are shipped to our customers.* We manufacture every pet food we sell, in plants that we own; our plants are ISO 9001:2008 certified for Quality Management and ISO 22000 certified for Food Safety.

How do I know which Royal Canin diet is right for my pet?

Based on size, age, lifestyle, and breed, each cat or dog has unique nutritional needs. For healthy pets, use our Product Selector to find the right diet for your cat or dog.If your pet is experiencing health issues, please refer to your veterinarian for more information. Your veterinarian will consider multiple factors when recommending an appropriate diet.

Customer Reviews

28 reviews 28 Reviews 4.8 out of 5 Stars

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100% of reviewersrecommend this product

4.8 / 5

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  • The...Best

    By on

    It is so convenient to have your food, litter, toys delivered monthly or on your schedule! PS-for all you dog/cat owners who have dumped your pet off on your pet sitter, it would be a nice gesture to send them monthly supplies since you don't care to keep them!

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  • Lifesaving alternative

    By on

    My 16 yr old cat had large stones in his bladder. Surgery was in the future. 1 week on this food and relief was obvious...symptoms stopped. 2 months later he still loves taste and remains healthy.

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  • Crunchies!

    By on

    My cat loves this dry food! He had lost a pound in the last year (10% of his weight) because he got tired of the wet food I’d been feeding him, and he didn’t really love the other dry food either. I switched him to Royal Canin SO wet and also got this Olfactory Attraction dry, and he now runs after me when I feed him! And, even better, he’s gained back almost the whole pound that he’d lost. His vet will be very happy at his next checkup!!

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  • My cat actually eats this!

    By on

    We had quite a time finding some food that he will actually eat. He desperately needs something for his urinary issues and we had a time finding something. He started eating this right out of the bag....no mixing with anything. He drinks so much more with this food as well, which he also needed. I'll definitely be a repeat customer!

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  • Love Chewy!

    By on

    Order always comes on time. Prices are great! Way cheaper than getting his food from the vet & way more convenient too!!

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  • Reduces hairballs, aides in digestion, helps prevent UTIs

    By on

    I have a long haired flame-point Himalayan adult male kitty (7 years old) who was prone to UTIs, crystal build up, and hairballs. After several visits to the vet, we were prescribed Royal Canin Urinary SO dry food. Immediately noticed a difference in my cat's health. The kibble was easy for him to chew (has a missing fang), reduced hairballs significantly, and he has not gotten a UTI in years since being prescribed this regimen. Now that he is older, I mix half dry kibble with half wet food (Science Diet) as this is easier for his digestion. Would highly recommend this product if you have a long-haired cat, cat prone to UTIs or one that has sensitive digestive tract.

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  • Yum best food ever!

    By on

    My cat "Bug" absolutely loves this food. When I bring home a bag she is all over it trying to get it open. When it is opened she just starts chattering and getting excited. She has been on this diet for a while now and she continues to love it. Highly recommend.

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  • Something's off

    By on

    The price for the product is in line with what I was paying. The shipping was fast. But there seems to be some difference in the product from what we've been using. My cat has been on this exact food for over 5yrs. He loves it. When I would fill his bowl before I went to bed a at night; it would be empty in the morning. The appearance of the food is noticeably different from what I was getting him at the vet. It's a lot darker and has a very different smell. Needless to say I don't believe he enjoys it as much. I don't know what they did but they messed up a good thing.

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  • My Kitties Say YUM!

    By on

    My kitties love the new Olfactory Royal Canin SO! I placed a bowl of it next to a bowl of their regular SO; they all made a beeline for the new food and they almost immediately emptied the bowl. One of my kitties must eat this food for health reasons and I really wanted to get her something else just to vary her diet a bit. Most of the other kitties have access to other, nonprescription, dry food. Poof especially loves her new food and I am so happy for her. So, thank you Royal Canin for the new food!

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  • Loves it!!!

    By on

    Our cat went crazy over this food! She absolutely loves it! That's a wonderful thing since she has to be on a special diet.

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