necessarily need to use chemicals to do this; a solution of warm water, vinegar, and baking soda will do.
Removing the ice : Most of the ice will have melted at this point, and you can dry the water with dish towels. However, in more critical cases, you may need to manually remove any remaining ice. To remove the ice, it’s important not to use knives or iron spatulas , which can damage the appliance’s interior. It’s better to use a special plastic ice scraper .
Turn the refrigerator and freezer back on
How to Defrost Your Fridge and Freezer: Tips and Tricks For Doing it Safely and Quickly