The most common and most likely answer to this crossword clue is the 3 plus 4 letter word LOO ROLL
I've seen this crossword clue in Financial Times
L
O
O
R
O
L
L
More clues leading to the result LOO ROLL
- Toilet paper alternative over in lounge
- Can paper almost appear to curl?
- Paper kept to hand — 24 may need it!
- Lounge around chamber not entirely laid back, as cleaning sheets
- Lounge containing glasses, cigar finally and paper near can
- Leaves in bog or in circles amidst three lakes
- Having no time at all for money, online pest producing bumf
- What's put by toilet door, heading off into lounge
- 28
Buddy explains!
The straight part
We know that "cleaning sheets" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case cleaning sheets = loo roll.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.