Can my landlord keep my bond for cleaning in WA?

Only if the place was not left reasonably clean, you caused damage beyond normal wear, or you owe money.

Your clock

The rule in WA

A landlord or agent cannot ask you to sign a release form that does not show the amount for each person.

What to send

I do not agree to the bond claim of [amount]. Any marks are fair wear and tear.

Who to call

Where this comes from

General information, not legal advice on your situation.