The most common and most likely answer to this crossword clue is the 6 letter word LOOFAH
I've seen this crossword clue in The Guardian
L
O
O
F
A
H
More clues leading to the result LOOFAH
- Sponge a twerp stood up on end of bath
- Sponge pudding brought back, I see
- Husband, an idiot, turning over scrubber in bath
- A halfwit lifted hotel sponge
- Sponge ass’s back — pleased expression
- Ladies note cleaning implement
- Rebellious kid regularly hiding bath sponge
- Scrubber prince put up pocketing cash
- Gosh! Muggins put up a scrubber
- John, with devout belief, renouncing it for a rough scrubber
Buddy explains!

The straight part
We know that "cleaning implement" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case cleaning implement = loofah.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does LOOFAH mean?
LOOFAH noun- A tropical vine, of the genus Luffa, having almost cylindrical fruit with a spongy, fibrous interior; the dishcloth gourd
- The dried fibrous interior used as a sponge for bathing
- Any bathing sponge