Cleaner turned over communists holding pensioner captive (4,6)

'cleaner' is the definition.
(soap powder is a kind of cleaner)

'turned over communists holding pensioner captive' is the wordplay.
'turned over' says the letters should be written backwards.
'communists' becomes 'reds' (red is a kind of communist).
'holding' means one lot of letters goes inside another.
'pensioner' becomes 'oap'.
'captive' becomes 'pow' (POW is an example).
'reds' written backwards gives 'sder'.
'oap'+'pow'='oappow'
'sder' going around 'oappow' is 'SOAP POWDER'.