Buzzers get more polish (7)

I believe the answer is:

beeswax

'polish' is the definition.
(I've seen this before)

'buzzers get more' is the wordplay.
'buzzers' becomes 'bees' (I've seen this before).
'get more' becomes 'wax' (wax can mean to increase).
'bees'+'wax'='BEESWAX'

(Other definitions for beeswax that I've seen before include "It's used to make honeycombs and candles" , "Output of buzzers" , "Natural product used in polishes" , "Furniture polish" , "Material in honeycombs" .)

I've seen this clue in The Guardian.

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