Watch this video I made for you. Here is how we live DAILY in Nigeria. We suffer sporadic power failures daily in Nigeria for the past 53 years. Read page 856 in President Clinton's book MY LIFE.
Do not put them indoors or in the garage. Carbon monoxide will accumulate and will be deadly. I heard people have died as a result of that. Another ice storm may even be on the way in February, who knows? Be prepared!