Regular cleaning and maintenance are crucial for the health and longevity of your built-in indoor butterfly and insect sanctuary. Remove any fallen leaves, debris, or dead insects from the sanctuary to prevent the spread of diseases. Trim and prune plants as needed to maintain a tidy and organized space. Regularly check for any signs of pests or diseases and take appropriate measures to address them promptly. By keeping your sanctuary clean and well-maintained, you'll ensure a thriving environment for butterflies and insects.