It is not advisable to clean a ceramic slow cooker insert with a copper scouring pad or other metal scouring pad, but plastic or nylon scouring pads are often acceptable. It is important to consult the user manual or manufacturer's website for specific instructions pertaining to the slow cooker.
Owners often wash the removable ceramic pot with a sponge or a cloth along with hot water and detergent, soaking beforehand to facilitate removal of stubborn food residue. Alternatively, some people use a dishwasher to clean the ceramic pot. Since sudden temperature changes weaken certain types of ceramic, it is important not to allow the ceramic insert to come into contact with cold water while it is still hot.