Note: Please do not use detergent when cleaning the filter, and wash away the surface with water.Insects may occur especially in summer, so we recommend washing them every day. To maintain your health, replace the filter between 2 weeks to 1 month or when visible contaminants such as fur, food scum or other visible contaminants are noticed. When replacing the filter, please make sure to clean each part of the water supply unit to keep it clean.