I hear you - Ferrets can smell!
I have a very sensitive nose and weak stomach (all the meds I have to take for the kidney transplant). This stuff is a life saver. I often spray into the tanks before I even attempt cleanup, especially with Figment!
I also have all enclosed tanks so it holds the smell in.
Either way, probably worth trying for the Ferrets, if nothing else. I'll keep using for the reptiles though.![]()