I had another idea last night or this morning. Ultraviolet light can be used and is used to clean air, water and control algee in ponds and aquariums it will also kill mold and dust mites etc... So why not blast a shower with UV light to kill stuff in there then just wipe it down. It would be sterile and would not involve chemicals. It would not do much if anything for soap scum or mineral deposites. But thats another set of problems I suppose. Of course it may take a while to be effective.

Downsides it would generate Ozone and UV light isn't good for our eyes. So you would not want to be in the room durring the process with out some ventalation and eye protection. Something I may look into more later on.

Turns out AMC is running bond stuff all day so at least I will be entertained.