Hi Bill Cobb, I`d like to respectfully ask how many Varanids you`ve actually seen in the wild (in situ)?
You say they don`t have dirt/dust on them, at least for any ammount of time, and they aren`t observed shedding, either? I`ve personally seen MANY wild Varanids (Australia, India, Africa) that didn`t look particularly "clean and bright", and CLEARLY had unshed skin patches on them in different parts of their bodies (perfectly normal, NOT necessarily a sign of ill health at all)!?
You`re advising Wayne to physically bathe his monitors, one of which is still extremely nervous, apparently because of the other animal dominating it (it`s also significantly smaller), presumably for the same reason, so forced handling at this stage in my opinion would have a very detrimental effect on the animal`s already compromised health.