bjlockie I've tried so many, I don't even remember them all (some of them didn't work at all). For now, I went with the value size of Listerine (alcohol formulation). Recently, I have used Tom's of Maine in their "Wicked Fresh!" formulation. If I remember correctly, it is also fluoride free. It works acceptably well, and doesn't leave me smelling like a boozer.
I have also used TheraBreath, which is somewhat more expensive, but rather effective. I don't think either of those are Canadian-made, however.
I have also seen a product from The Green Beaver Company, called NaturaFresh, I think. That one is Canadian-made and alcohol-free, but I haven't tried it yet. It seems to be stocked at some Quebec Maxi stores, so I suspect you would be able to find it at Loblaws/Superstore or Shoppers.