These for clearing rubbish? Writer put back a lot (3-4)

I believe the answer is:

bin-bags

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'these for clearing rubbish?' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'writer put back a lot' is the wordplay.
'writer' becomes 'nib' (something which writes).
'put back' shows that the letters should be reversed in order.
'a lot' becomes 'bags' (bags can mean a large amount).
'nib' reversed gives 'bin'.
'bin'+'bags'='BIN-BAGS'

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I've seen this clue in The Times.

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