I tried the road flare thing with my Channing stoker. I tried cutting a 10 minute flare into 3 pieces and tried one at a time, without success. So, I doubled them side by side...still no success. I finally gave up and went back to the store where I bought the stove and they still had mice. It STILL took 2 tries!
A couple of weeks ago, when I shut down, I discovered the down-side of road flares. The hot-stuff that drips out of them succeeded in plugging up a couple of the air holes under the fire. I had to use an awl to bang it out of the 3 holes that were plugged and a couple that were partially plugged. No more flares for me!