So clean you can eat off it
Meaning
Spotlessly clean.
Usage
Compliments thorough cleaning.
Origin & History
Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.
Domestic advertising hyperbole that compares surfaces to food safety.
Popularized by mid-20th-century home care commercials.