If you are unsure of the material used inside your slow cooker, contact the manufacturer or visit their website to find out, or consider an alternate method. Be advised that many manufacturers do not include instructions for cleaning the inside of the cooker. Instead, they recommended professional servicing.
Although this is a general rule when using chemicals, it is especially important here, since you will be working directly over the item to be cleaned.
For especially dirty cookers, wait a while longer for the dirt and grime to absorb even more foam.
Be sure you have removed all traces of cleaner before using the cooker again. After wiping up the foam and dirt with a sponge, use paper towels to go over the inside again. Dry it thoroughly.
Always use a bowl or similar container. Never pour the ammonia directly into the cooker.
For any stubborn bits, make a paste to scrub into them with a sponge. Add hydrogen peroxide to baking soda in a small bowl mixing bowl until there is enough liquid to stir the two into a paste. [5] X Research source
This will prevent the traces of food inside from drying into a crust.
Be careful with rinsing. Use your sink’s spray nozzle or pour water along the inside only. Then carefully pour the dirty water into the sink. Water on the outside of the cleaner could effect electrical components.
If needed, add more soda and peroxide to create more paste on your first try, or repeat as needed.