I have the Mickey Boots in both white and black and haven't used them in years. Used them too long before and HATE THEM!!!!!!! They are like nail kegs on your feet. I now use the Gore-Tex and heater packs with 1/2 the weight.
My wife uses the Secret trick with her bike boots and new shoes. She puts it on her heels to keep from getting blisters and works great. Keeps a spare tube in our bike tour pack just for this.
I may have to try this for my feet as well for they sweat like a "cheap woman" in church and thats my main problem. I bought the Artic Shield boot blankets last year but never got to use them for it was not cold enought to get them out. I used my Rocky Cornstalker 1200grm Cordura boots for 95% of the gun season.