At first my DYH didn't like it. Then I figured out that I had made a mistake in installing it. Her sleeping perch was smack in the middle of the heater. That gave her no place to hold on to to get on her perch! Really Mom! I moved the heater two bars back and we have been very happy ever since. If Polly gets food on it, I just wipe it off, just like any other place in the cage. It certainly has given me peace of mind. I no longer have to worry if Polly is warm enough - a major concern in my old house.