Bests & Worsts Reviews from Amazon

I purchased this item to place in the floor of a homemade tub shelter for a stray cat visiting our home. I placed the heater between the bottom of two storage tubs above 1 inch foam insulation with the electric cord exiting a hole in the corner. The entire tub was insulated all around the inner tub, sides and lid. This worked great for 5 months, keeping the internal temperature very nice inside. I am convinced it saved the stray cat's life during a very cold 2011 MN winter. However, during a weekly inspection of the house just last week, I noticed the shelter was very hot inside and the pad overheated and melted the bottoms of both the inner tub and insulation. This was a very dangerous situation as it might have killed the cat and/or started a fire on my deck had it gone unnoticed.