Depends on what you are trying to do and which F10 product you have. the F10sc typically is 1:500 for general use 1:250 for high level it kills most bacteria and fungi and virus. 1:125 this kills enclosed virus like Parvovirus. I am not sure what IBD is so I use 1:125 for all quarantine conditions. I use 1:250 for everything else.

The F10 scxd is the same but the others are at different rates.

F10 requires a 10 min contact time. The big difference is the stability of it diluted is 6 months compared to one week to one month for Chlorahexidine.