Self-cleaning refers to the ability of certain materials or surfaces to remove dirt, stains, and contaminants without the need for manual cleaning. This process often involves special coatings or treatments that break down grime when exposed to light, heat, or moisture. For example, self-cleaning glass can use sunlight to help eliminate dirt, making it easier to maintain. In addition to surfaces, some appliances, like self-cleaning ovens, have built-in features that use high temperatures to burn off food residues. This automated process saves time and effort, allowing users to maintain cleanliness with minimal intervention.