I was always taught 1 part water to 10 parts bleach does the trick and that's what I use to disinfect enclosures. That's not all though. First we scrub them in the bathtub with hot water and dishsoap so any corners, edges, whatever get really clean. At the same time I do the water dishes and so forth in the sink the same way. After rinsing all that to make sure the soap is gone, I fill the tub with the 1 to 10 parts water/bleach solution, toss in the water dish to soak in there as well and let it all set for a good 20 minutes or so (hottest water possible). Then it's on to repeated rinsing with running cold water and a drying with paper towels. Sometimes I do the soap and water first, sometimes I do it second - either way it's both - then the repeated clear water rinsing. Seems to do the job really well.

Then I get to clean the bathroom!