I would definitely warn against using Eucalptus solution just because it is a really harsh cleaner... it burns on your skin and isnt nearly as friendly as Tea Tree Oil. Peter I use Tea Tree oil for all manner of things around the house, as I do Lavender oil, but I dont know much about its neurological effects on pets with exposure... the truth is that Vinegar is just Ethanoic Acid, which is why it would be a good disinfectant in the correct ratios, for some not all bacteria and fungi I suppose.
I would be afraid that if I used vinegar the whole Viv would smell of sour vinegar lol. Does anyone here find that?
Around the house I use Euc (Benchtops, floors etc because its so powerful) but on my own body I would use Tea Tree and Lavender, and I would be inclined to do the same in a Viv to keep in hygienic. A weak solution