Sorry it took so long, I had to go into work before I got the chance to send the link. It's a little pricy, but if it's just him eating it then it should last.
https://twitter.com/SweetDealsCA/status/1475336804480004099
Triple Discount
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Amazon's Choice
[Amazon]
Hill's Science Diet Dry Cat Food, Adult, Urinary & Hairball Control, Chicken Recipe, 15.5 Lb Bag
https://www.amazon.ca/Hills-Science-Diet-Urinary-Hairball/dp/B00ZQYGSTM
https://www.facebook.com/sweetdealscad/posts/152246523810770