Is it safe to store the small and large propane tanks in a garage or shed? Winter is coming so that means temps down to the single digits where I live, summer get to upper 90's. Is there anyhting to worry about? Although the garage stay much warmer in the winter time, doesn't get cold enough to freeze a gallon jug with heat in the house and insulation. Are there better fuels to use for cooking emergencies that are better/safer than propane? Other than wood of course, what about K-1?