OK, Bernadette You should not leave any warmer on unattended (Not even Scensy) but a lot of people do. Of course the warmer will get hot even the 2 piece warmers get hot but try the halogen warmers they get extremely hot, but if one does leave it on then it should be placed on a candle plate or a trivet. I have no problems with mine and I use palm wax. a 40 watt bulb in a large ceramic warmer is not a big thing. Why would you even pick up a hot bowl of wax??? And every warmer will tell not to leave on unattended. And my customers are not potential customers they buy in my store every day. Sorry don't take me wrong just my opinion.