Hygienic practice featured in campaign – is it, in a sense, backward-looking? (10)

'hygienic practice' is the definition.
The definition suggests a verb in its base form which matches the answer.

'featured in campaign is it in a sense backward-looking?' is the wordplay.
'featured in' says the answer is hidden in the clue.
'backward-looking?' is a reversal indicator.
'gnisitinas' is hidden in the letters of 'campaign is it in a sense'.
'gnisitinas' back-to-front is 'SANITISING'.

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