Synonyms for «serious cleaning»

Synonyms for individual words can be found below.

The cover is also made stain resistant so it takes a while before it will really need serious cleaning. (babieslounge.com)
If your cat brings in fleas, it's time for serious cleaning. (pets.webmd.com)
I really need to do a more serious clean out of my closet. (looplooks.net)
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