Hello I am Dr. Joey. Thanks for trusting me to help you and your pet today. I am a licensed veterinarian with over 15 years of experience. I look forward to working with you.
This poor guy. He's been through a lot in the past week. On the one hand, it would be wonderful if he ate the science diet product, but cats are fussy. There are two other brands that make great urinary tract food: Royal Canin Urinary So and Purina has a great prescription diet. So, in the longer-term I recommend you ask your vet to try these products. All these foods are guaranteed which means that you can take back the Science diet for a full refund and try a different diet.
On the other hand, it is crucial Sox eat. So, for the weekend or until your vet opens, please just feed him what he likes. IF he is used to a high quality canned food, then please offer that. Canned is always better than dry for a cat with urinary issues (provides more water). If I was his veterinarian I would prefer he eat something rather than refuse to eat at all. In the shorter term it should not make a huge difference since our goal is to try a different urinary diet. If he refuses ALL the urinary prescription diet (there are no non-prescription diets that will work), then you will need to have his urine monitored to see if he produces crystals. If so, then he will need a supplement to normalize his urine and prevent crystals.
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