Sponge half screwed up, pair of ducks poking it (6)
I believe the answer is:
loofah
'sponge' is the definition.
(loofah is a type of sponge)
'half screwed up pair of ducks poking it' is the wordplay.
I cannot really see how this works, but
'pair' could be 'oo' (resembles 00, a pair of ducks in cricket) and 'oo' is found in the answer.
an anagram of 'half' is 'lfah' which is located in the left over letters.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for loofah that I've seen before include "Flesh brush" , "Bathtime accessory" , "Hard bathroom sponge" , "Back scrubber" , "Dried pod commonly used as bathroom sponge" .)