Proper maintenance and cleaning of your built-in pizza oven are essential for its longevity and performance. After each use, allow the oven to cool down and then remove any food debris or ash. Use a brush or cloth to wipe down the interior and exterior surfaces. For stubborn stains, you can use a mild detergent or oven cleaner specifically designed for outdoor ovens. Regular cleaning will not only keep your oven looking great but also ensure that it functions optimally.