I searched Amazon for some heated mats and initially only found products that had really bad reviews.
Then I searched outside of Amazon and found Heat Trak. The reviews looked promising and while the return policy included a 15% restocking fee, I ordered a few just to try them out. If they worked, great - if not, I would only use one and return the others.
Well, no need. Check this out:
First time we used them, there was no snow but it was cold. We had people over and when they went outside in their socks, they were loving it - no boots needed!!
Then the snow came - sure enough - the mats worked perfectly. It's not instant - 2 inches of snow melts every hour but that's more than enough to get the job down. They aren't THAT expensive either (under $200 for a 5' mat)
Here are some links for Canada:
5' x 30'" long mat: http://amzn.to/2zeYbVJ
One caveat, if you buy the mat on its own, it doesn't come with a power supply. So here's the link for the power supply:
We also bought a smaller mat which is perfect for steps or smaller areas -http://amzn.to/2BkCq8A
Here's a link to the company web site - definitely worth checking out. They also have some more industrial mats that are better for driveways but they are a tad expensive (>$1000).