Try these, my local store is a BMR Agrizone and is a CO-OP member of Novago. I can get everything I need from them: feed, grit, crushed oyster shells, DE, wood chip bedding, etc.
https://www.novago.coop/succursales/
https://www.bmr.ca/en/storelocator/index/index
Hi, I am starting out with 3 (19 week old) ISA Browns on my humble 3/4 acre lot about half an hour away from Canada's national capital of Ottawa. I have no prior experience in this field and I am the first of my immediate family and friends to try my hand at keeping chickens. I am currently...