I am writing to thank you for making such a good product. I've had my chicken door for 12 years this month, and it's still going strong. It's never let me down. We've had -5 days in the winter, and 105 in the summer. Always opens and closes when expected. And I haven't cared for it once. No cleaning or oiling. It's built like a tank! Oh, and my original battery just went. 12 year is quite a run!