system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do self-cleaning ovens work?

I don't have any water hose attached to my oven so how could this work? Little dirt eating nanobots?
gpt
The oven door locks closed and the oven heats up much hotter than you would use it for baking - 800 degrees or more. This literally burns off most of the grease and crumbs in the oven, leaving behind a little ash that can be wiped up with a damp cloth.