Where to find Pepsi Max in ON?

I have some of those B2G1 Pepsi Max coupons and wondering if anyone can tell me if you've seen a store in Ontario that carries the 6x710ml format of Pepsi Max? Thought I would ask here vs wandering around my city to every store looking. Thanks in advance for any help!

I have found it at Walmart :)

I used my coupons at Walmart.

Hmmm...I tried Walmart but they didn't have them. Guess I need to visit a few bigger ones. Thanks!!