Garage kept........
I agree with Gerapau, but I don't winterize at all. I live on the Gulf Coast of Alabama and if it freezes, it's only once or twice a year.
But to keep moisture from building on the inside of my engine block, I start it reqularly through the winter months.
If your not going to run it through the winter, it would be a good idea to just take out the plugs, pour about a teaspoon of your 2 cycle oil in the cylinders and turn the engine over a couple times. You should do that once every two or three weeks. Fogging isn't really necessary but will give you better protection.