Crossword Genius

Domestic cleaner spread boring work (5)

Ross

I believe the answer is:

drano

I'm a little stuck... Click here to teach me more about this clue!

'domestic cleaner' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'spread boring work' is the wordplay.
I cannot quite see how this works, but
'spread' could be 'ran' (I've seen this in another clue) and 'ran' is located in the answer.
'work' could be 'do' (synonyms) and 'do' is found within the remaining letters.
No letters remain.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.
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