CER Cleaning

Hello,

Are there recommended cleaning solutions/disinfectants for cleaning an ISO Class 7 CER (i.e., walls, floors, ceiling)? This would be done once a week. The CER is for medical devices that are later EO sterilized if that makes a difference.

Also, is it still industry standard to switch between different types of cleaning agents (e.g., phenolic based vs peracetic acid based) to prevent microbial resistance?

Thank you.
Flyonthewall