yes, make sure it's plugged into a lamp dimmer, rheostat, or thermostat though. An unregulated UTH won't melt the plastic tub, but it will be much too hot for your animal.
This is what I'm using to regulate my UTH:
http://www.lowes.com/webapp/wcs/stor...AID=1173839923
..until I get a nice thermostat. Even with lamp dimmers though you need to be vigilant checking the temps just to be safe.