Cleaning validation of the washing machines in the production area

GOOD VALIDATION PRACTICE (cGVP) CLEANING VALIDATION
1

Hi all,

We are making the cleaning validation for all the production equipments in our production area, but as I heard, there is a question about the washing machines. How does one make the cleaning validation of the washing machines in the productin area? Is it necessary?

Thanks

2

Having the same question at our API site.
How do others handle this?