Do not use detergent when washing
Unglazed clay gives good effect to taste of tea. Detergent may affect to the clay.
Do not scrub with a scrub brush
No need to use brush.
Just wash and rinse with water
Make sure no tea leaves are left.
Do not keep tea leaves in teapot over night
Wash and dry completely after use at least end of day to avoid stain, and hygiene point of view