I will second the dimmer idea. Dimmers work just fine as long as you check the temps often. Every time the temps in your house fluctuate, the heat pad temps fluctuate. You should be able to find lamp dimmers at a home improvement store in the lamp aisle. I wouldn't buy a cheap thermostat, you are better off with a dimmer. Cheap thermostats break, and when they break they let all the power through, when a dimmer breaks, it kills the power. Trust me, I learned the hard way on this one, almost lost my collection when I first started.