Meaning of the word "elbow grease is always the best polish" in English

What does "elbow grease is always the best polish" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

elbow grease is always the best polish

US /ˈel.boʊ ɡriːs ɪz ˈɔːl.weɪz ðə best ˈpɑː.lɪʃ/
UK /ˈel.bəʊ ɡriːs ɪz ˈɔːl.weɪz ðə best ˈpɒl.ɪʃ/
"elbow grease is always the best polish" picture

Idiom

a proverb meaning that hard physical work or effort is the most effective way to achieve a good result, especially when cleaning or polishing something

Example:
You don't need expensive chemicals to clean that floor; elbow grease is always the best polish.
The old car looks new again because elbow grease is always the best polish.