You can disinfect surfaces with a solution of bleach and water. Put one third of a cup of household bleach into one gallon of water to make the solution. Then apply it to the areas you want to disinfect and leave it on for one minute or more. Rinse off thoroughly with clean water and you are done. Note: make sure the bleach used contains sodium hypochlorite.
If you rinse the surfaces off with water thoroughly and then let them air dry (in the sun if that is an option to speed up the drying process), you should be fine. I have done this many times over the years (with the bleach solution mostly but occasionally with alcohol as well) and never experienced problems.
I have used Bill's process before and generally I do it when I have to reuse a tub or enclosure for new tortoises and wanted to eliminate any pathogens that might remain from the old. This same process can be used in quarantine situations or when caring for sick animals. @zovick will have more to add.
