Cleaning should be undertaken using a standard detergent that is appropriate for the surface. Disinfectants normally need a clean surface, so soiled surfaces should be cleaned mechanically (e.g. by cloth, brush, etc) with a standard detergent.
The correct disinfectant and application method should be chosen based on the item being cleaned:
Bleach solution
Bleach is the most effective and can be purchased cheaply in larger quantities. Bleach is also very effective on other bacteria and viruses, such as preventing gastro. However, bleach is corrosive and an irritant to skin and will fade material and can damage fabrics and stitching.
Quaternary Ammonium Compounds (QACs or Quats)
QACs (e.g. benzalkonium chloride) are effective at very low concentrations and come as a spray, wipes, or concentrated solution. They are safe at low concentrations (e.g. they are commonly used as preservatives in eye drops), however they are corrosive at higher concentrations and should not be used on medical equipment.
Alcohol
Alcohol-based disinfectants are simple to apply for a regular wipe-down of frequently touched surface and are the most appropriate for use on human skin. However an alcohol-based disinfectant is generally less effective, particularly on other bacteria and viruses such as gastro, so are not sufficient for cleaning bathrooms or food preparation areas. If using an alcohol-based disinfectant spray, sufficient must be applied to wet the entire surface and it should be allowed to dry thoroughly. It is not effective to just spray and wipe off.
Other disinfectants
There are a number of other less common disinfectants that can be used, the Therapeutic Goods Administration have published a list of approved disinfectants: https://www.tga.gov.au/disinfectants-use-against-covid-19-artg-legal-supply-australia