What I know from clean rooms in the biopharmaceutical production is that you avoid there cardboard at all because there is no straightforward way for disinfection (besides the particulate contamination that comes with them). Therefore, one approach is to remove the cardboard as soon as possible and put it away (and wash your hands afterwards).
Edit—Additional comment to make the statement more precise:
There is no straightforward way for disinfection of cardboard without destroying it, i.e., the cardboard soaks in the cleaning agent and will disintegrate.
I haven’t been able to find anything on the effectiveness of disinfectant on cardboard. Do you have any pointers?
What I know from clean rooms in the biopharmaceutical production is that you avoid there cardboard at all because there is no straightforward way for disinfection (besides the particulate contamination that comes with them). Therefore, one approach is to remove the cardboard as soon as possible and put it away (and wash your hands afterwards).
Edit—Additional comment to make the statement more precise:
There is no straightforward way for disinfection of cardboard without destroying it, i.e., the cardboard soaks in the cleaning agent and will disintegrate.