I use Zilla UTH for all of my snakes enclosures: glass, tub and PVC (Animal Plastics). As long as you have them on a thermostat, temps are confirmed with a temp gun the day of set up and every now and then as part of maintenance, it is fine. The only annoyance about this brand or possibly UTH with adhesives in general is that some won't stick. I used duct tape on my UTH to make sure it stays on the bottom of my tanks.