I've recently had a hedgehog that was trying to hibernate. In order to discourage this behavior, it is recommended to increase the room temperature. The area my hedgehogs stay in maintains a 72 degree temperature, which is okay, but at the lower end of the temperatures they like. It is recommended that they be kept at a temperature between 72-82 degrees.
I have 3 other hedgehogs, and none are trying to hibernate. The first thing I did was moved all their cages to a corner, and increase the room temperature a few degrees. I then got on my computer to search for cage warmers. I love Amazon, with their variety and great prices. In my search, I was looking for safety, temperature control, and not too big. That's when I found this...
K&H Heated Resting Pad for small animals. I always look a the ratings and read the reviews. This one had 4 1/2 stars. It's made specifically for small animals, can be used indoors or outdoors, and is safe. Having an internal thermostat makes it energy efficient. This pad warms when something is laying on it.
Made of a hard plastic, it is durable and easy to clean. It also has a coated cable to prevent chewing of the cords. The size is 9" x 12", perfect for what I was looking for. My Lucy, loves it!
A cover can also be purchased to fit this pad, but I don't need it with the hedgies sleeping in a Cozy Sak.
Just like people, hedgehogs like a variety of temperatures. Little Lucy, is now a happy hedgie.