Royal Canin Veterinary Diet® Feline Urinary SO® Olfactory Attraction dry cat food

Please note: This product will be discontinued soon. If out of stock, please select an alternative diet listed under "Related Products" below. Please contact our Technical Services department at 1 (800) 592-6687 if you have any questions regarding an alternative diet recommendation.

Founded by a veterinarian, Royal Canin has over 40 years experience in health nutrition. Our work with pet nutritionists, breeders, and veterinarians from around the world has provided us with knowledge about the specific nutritional requirements of cats. This knowledge has allowed us to formulate the optimal diet for your cat's special needs.

  • Supports urinary health
  • Stimulates appetite
  • Royal Canin Urinary SO Index® promotes a urinary environment unfavorable to the development of both struvite and calcium oxalate crystals
  • 100% Complete and Balanced Nutrition
  • 100% Satisfaction Guaranteed

Feline Urinary SO Olfactory Attraction is a highly digestible, palatable, complete and balanced adult cat food formulated to aid in the nutritional management of calcium oxalate and struvite urolithiasis.

Where to Buy
Size: 12 oz
Size: 7.7 lb
Product Information

Relative super saturation (RSS) methodology predicts the crystallization potential of urine. RSS is used to develop diets for cats prone to both struvite and oxalate urolithiasis.

Aromatic Profile
To stimulate the individual preferences of cats attracted by specific aromas, this diet is formulated with raw materials with a targeted aromatic profile.

Feeding Guide
Recommended Daily Feeding Portion
Weight Tendency to become Overweight Ideal Weight
4.4 lb (2.0 kg) 3/8 cup (29 g) 3/8 cup (36 g)
5.5 lb (2.5 kg) 3/8 cup (34 g) 1/2 cup (42 g)
6.6 lb (3.0 kg) 1/2 cup (39 g) 1/2 cup (48 g)
7.7 lb (3.5 kg) 1/2 cup (43 g) 5/8 cup (54 g)
8.8 lb (4.0 kg) 1/2 cup (47 g) 5/8 cup (59 g)
9.9 lb (4.5 kg) 5/8 cup (52 g) 3/4 cup (64 g)
11.0 lb (5.0 kg) 5/8 cup (56 g) 3/4 cup (69 g)
13.2 lb (6.0 kg) 3/4 cup (63 g) 7/8 cup (79 g)
15.4 lb (7.0 kg) 7/8 cup (71 g) 1 cup (88 g)
17.6 lb (8.0 kg) 7/8 cup (78 g) 1 1/8 cups (97 g)
19.8 lb (9.0 kg) 1 cup (84 g) 1 1/4 cups (106 g)
22.0 lb (10.0 kg) 1 cup (91 g) 1 3/8 cups (114 g)
Urinary SO Olfactory Attraction is formulated to meet the nutritional levels established by the AAFCO (Association of American Feed Control Officials) Cat Food Nutrient Profiles for maintenance.

Fish meal, brewers 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.

Guaranteed Analysis
Crude Protein (min)30.0%
Crude Fat (min)9.0%
Crude Fiber (max)9.0%
Moisture (max)8.0%
Calorie Content
This diet contains 3308 kilocalories of metabolizable energy (ME) per kilogram or 284 kilocalories ME per cup on an as fed basis (calculated).
Product Reviews
Royal Canin Veterinary Diet ® Feline Urinary SO ® Olfactory Attraction dry cat food is rated 4.8 out of 5 by 71.
Rated 4 out of 5 by from cat has eaten this for 10 years My female cat got repeat bladder infections that stop when she eats SO, when i tried to get cheap and try another food she got another infection. I have been feeding her this for over 10 years now with no trouble, although she did gain weight. Her male brother has been eating it too the whole time and at 16 years old I found out he has a giant stone in his bladder. He is not a good candidate for bladder surgery so I have to monitor his pain and have him put down when he becomes uncomfortable. I have no way to find out what kind of stone it is but as SO protects against both Struvite and Calcium it is odd that he has developed one.
Date published: 2018-03-29
Rated 5 out of 5 by from Saved my Scottie Hi my scottie had a bad blockage he almost died. i never knew food could cause this. After days at hospitol he came home on this diet. This was 7 yrs ago. He is healthy happy cat. Have kept him on this food. he loves it. Hard to keep other cats from eating. Just wish it wasnt so expensive use to be 30.00 now 65.00 really having hard time affording it. But highly recommend this Thankyou Royal Canin
Date published: 2015-08-10
Rated 5 out of 5 by from Has kept my kitty healthy for over almost 20 years When my cat, Snowball, was around 3 years old I found out that male cats are prone to urinary tract infections. My vet put him on Royal Canin Feline Urinary SO. He didn't have any problems for years. The food is pricy and when I didn't have the money to buy his food, I tried to move him to a store brand food. Within a week my poor kitty had a horrible UTI. I took him to the vet and they treated him. In the words of my vet, "the food is cheaper than the vet bill." I have NEVER taken him off it again. My cat turned 17 in May 2016. Yes I highly recommend this product!
Date published: 2016-06-04
Rated 5 out of 5 by from Saved my cats life My truck traveling cat was prone to getting blocked about twice a year and never when we were home. Razz met quite a few vets from around the country and I spent a ton of money on vet bills. Then one night I took Razz into see the emergency vet in Janesville,WI. He unblocked Razz and suggested I use Royal Canin Feline S/O dry food. Razz is a senior now at 19 years, but that visit saved his life! Razz has NEVER been blocked again. I am a true believer in Royal Canin and will not feed him anything else! Thank you Royal Canin and my "hero" vet back in Wisconsin!!!
Date published: 2015-08-16
Rated 5 out of 5 by from RC Feline Urinary SO dry food Started using this product over a year ago because of my cat's diagnosis. Was very apprehensive to get it but she loves it and is well and doing great. The flavor must be good as my other cats wants to eat it as well.
Date published: 2016-05-09
Rated 5 out of 5 by from High Palatability! I have been buying this food for about 5 years now. My ragdoll had serious urinary troubles when he was younger and also prone to getting crystals. Rather then spending lots of money at the vet each time we decided to use this food to manage the condition. We have not looked back since! The nutritional side is incredible and the health benefits are unlike any other brand. He now refuses to eat any other biscuit and as he is such a fussy eater I don't have to worry because he is so happy with his Royal Canin S/O Urinary diet.
Date published: 2015-08-28
Rated 5 out of 5 by from Worth the Money! we started feeding this to one of our outside cats that suffered years of stones and blockages. When we finally started him on this food - 2 years this month and no problems at all and he looks better than ever and you can just tell he feels great too!
Date published: 2016-05-09
Rated 5 out of 5 by from Helped my kitty get better! My cat was projectile vomiting from drinking so much water after his dry food. My vet said to try Royal Canin Urinary S/O and ever since, he's been great! I highly recommend this product!
Date published: 2015-08-10
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