Thanks for the information everyone! I am very glad I checked here before I bought and brought them. I was leaning more toward the floating ones because of the fire hazard and thought they would at least have a better chance of being doused and not catching anything a blaze. It seems even those may not be as safe though. Also I hadn't realized the danger to animals as stated above. That was a good reminder and I would have felt terrible to have harmed any.
Again my thanks for your help and advice