Actually I would only do that if your smoker is one that has a bad condensation problem with it's window.
Once you get your window really clean, don't forget to coat it with Rain X to repel the moisture while smoking, as Bear posted in this tread a few days ago.
http://www.smokingmeatforums.com/t/237951/mes-40-bluetooth-window-condensation
See Bear's post #11
I used my Gen #1 for 5 years without having excess condensation on the glass, but this Gen #2.5 needs the Rain-X real bad.
Bear