Go get a heat emitter, they are made of ceramic. They can be a bit pricey, but from personal experience, they last a long time making them worth what you spend for them. I am still using one that I bought over 2 years ago, and it is still putting out the heat as well as it did brand new. I quit using bulbs because they do burn out rather quickly, in fact, like you, I have bought brand new ones and put them in, and had then quit on me within a week or so. Is the bulb you had burn out your snakes only heat source? If so, you will need more than just that, even with a heat emitter. I have UTH also because the heat emitter wont do it by itself in my own set up.