Yes, Surf gets clothes so clean, they smell like sunshine. And that means they're clean clear through.
10 seconds sound clip from the The Day the Earth Stood Still (1954) classic radio play.
You can hear this line at 00:56:53 in the radio play.
Quote context
[...]
- And that's important, because things aren't really clean unless they smell clean.
- It's true that all good detergents these days get clothes clean-looking, but Surf does more.
- This is Irving Cummings saying good night to you from Hollywood.
- Knowing how to save regularly is sometimes the only difference between success and failure.
[...]