Cleaner shifting detritus without it? (6)
I believe the answer is:
duster
'cleaner' is the definition.
(dusting is a type of cleaning)
'shifting detritus without it?' is the wordplay.
'shifting' indicates anagramming the letters.
'without' indicates named letters should be taken away.
'detritus' with 'it' taken out is 'detrus'.
'detrus' with letters rearranged gives 'DUSTER'.
(Other definitions for duster that I've seen before include "Rusted (anag)" , "Cloth for removing surface powder" , "yellow cloth" , "Polishing cloth" , "Soft cloth for cleaning surface" .)