I recently ordered a UTH from Big Apple Pet Supply. I placed the heat mat under my new enclosure and went to turn it on and the switch would not move. They made me pay to ship it back and then accused me of putting glue into the switch!!! I couldn't believe it! Why on earth would I put glue into the switch? Especially since that would mean I couldn't put my snake into her new enclosure! That is how they sent it to me! Absolutely HORRIBLE customer service - so beware! They will ship you faulty products, then charge you to replace it and then accuse you of breaking it!