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Prepositions after verbs

Clean in, with, up, at or by?

Clean combines naturally with several prepositions and particles, but each has a different meaning or grammar pattern.

Quick answer

Common patterns with clean

Clean up means remove dirt or make tidy. Clean with introduces a tool or substance. Clean by explains a method. Clean in can refer to a place where cleaning happens. Clean at is uncommon after the verb clean.

We need to clean up the kitchen.
She cleaned the floor with hot water.
The machine is cleaned by hand.

Choose the pattern by meaning

These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.

1
clean up + place/object

Making something tidy

Use clean up for removing dirt, rubbish, or disorder.

They cleaned up after the party.
Please clean up your desk.
2
clean + object + with + tool/substance

Showing the cleaning method

Use with to mention what is used for cleaning.

He cleaned the screen with a soft cloth.
She cleaned the sink with vinegar.
3
clean by + method

Describing how something is cleaned

Use by to explain a process or method.

The equipment is cleaned by steam.
The surface was cleaned by hand.
4
clean in + place

Referring to a location

In is usually a place adjunct rather than a fixed verb pattern.

They cleaned in the storage room.
Staff were cleaning in the hallway.

See the difference in context

The same subject can take different constructions because each sentence answers a different question.

Construction
Example
Meaning
clean up
We cleaned up the garage.
Make a place tidy or remove dirt.
clean with
She cleaned the mirror with paper towels.
Mention the tool or substance used.
clean by
The tanks are cleaned by pressure washing.
Describe the cleaning method.
clean in
They cleaned in the kitchen all morning.
In introduces the location of the action.
clean at
She cleans at the hotel on weekends.
At usually refers to a workplace or location, not a direct verb-preposition combination.

Common mistakes

Some combinations appear in real text but do not mean what learners often assume.

Using clean at for an object

At normally refers to location, not the thing being cleaned.

✕ She cleaned at the window. ✓ She cleaned the window.

Forgetting up in the idiom

Clean and clean up can have different meanings.

✕ Please clean after dinner. ✓ Please clean up after dinner.

Using with after clean without an object

With usually follows the object being cleaned.

✕ He cleaned with soap the floor. ✓ He cleaned the floor with soap.

Quick practice

Choose the expression that matches the intended meaning.

1. Please ___ the kitchen before guests arrive.
2. She cleaned the table ___ a damp cloth.
3. The workers cleaned ___ the basement.

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Frequently asked questions

Is clean up separable?

Yes. You can say clean up the room or clean the room up.

Can clean with refer to people?

Usually it refers to tools or substances, not people.

Is clean at common English?

Not as a fixed pattern. At usually introduces a location, employer, or workplace.

calculate, by, calculate, in, calculate, from "call for" or "call on"? "campaign for" or "campaign against"? cancel by, due, at, in or for? capitulate to, in, like, by or after? captivate by, for, with, from or in? "capture by" or "capture in"? "care about" or "care for"? carry with, by, in, to or into? carve into, out, in, on or with? cast in, into, for, by or on? "catch in", "catch by" or "catch on"?

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