I get germ off kitchen device (3,5)
I believe the answer is:
egg timer
'kitchen device' is the definition.
(I've seen this before)
'i get germ off' is the wordplay.
'off' is an anagram indicator.
'i'+'get'+'germ'='igetgerm'
'igetgerm' with letters rearranged gives 'EGG-TIMER'.
(Other definitions for egg timer that I've seen before include "One may be set to, say, three minutes" , "Hourglass device used in cooking ova" , "It goes on briefly in the morning" , "Four-minute hourglass" , "Possible kitchenware" .)