Used to clean floors and mop up water, a mop in your dream may point to a process of cleaning up after an emotional storm in your life such as in an argument or a disappointment. It may also point to tears of sadness that may need sopping up.
Symbolic of the need to clean out an area of your life, Gen. 35:2 NLT
See “clean” and “foundation”
You will need forethought and carefulness to avoid coming trouble.