The most common and most likely answer to this crossword clue is the 4 plus 6 letter word SOAP POWDER
I've seen this crossword clue in The Guardian
S
O
A
P
P
O
W
D
E
R
More clues leading to the result SOAP POWDER
- Translation of a pope’s word for detergent
- Daughter inspired by the influence of granny, perhaps, after heading for shower to get cleaner
- Held by communists after uprising, veteran prisoner getting ground cleaner
- Cleaner criminal opposed war
- Cleaner rubbish proposed with 2/5 of waste
- It’s used for cleaning area blanketed with very soft fresh snow
Buddy explains!
The straight part
We know that "ground cleaner" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case ground cleaner = soap powder.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.