deep-clean
US /ˈdiːp kliːn/
UK /ˈdiːp kliːn/

1.
to clean something very thoroughly, often reaching areas that are usually neglected
:
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We need to deep-clean the kitchen before the party.
•
She decided to deep-clean her entire apartment over the weekend.
1.
a very thorough cleaning, often involving specialized techniques or equipment
:
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The apartment needed a complete deep-clean after the tenants moved out.
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She scheduled a professional deep-clean for her carpets.