God please do not let me be deceived. You'll get news and memes here. Watched from the sidelines 'til Jan'20, activated Aug'20
This method really works!
You can put 2 or more in one room!
Another tip - Use clothesline to make a square over your bed. Attach flat sheets to enclose your bed in a "tent."
You will sleep 300% warmer, I promise!
This method was battle-tested in Punta del Diablo, Uruguay in freezing temps in a house with an incomplete roof & plastic in the windows.