I use a heck of lot less sanitizer and don't think you need buckets of star san if you are already using an oxy cleaner.
Hydrogen Peroxide is a disinfectant - which is stronger than a sanitizer - which both are stronger than a cleaner. OXY clean reports it creates 18% hydrogen peroxide in solution which is arguably sufficient to be a chemical sterilizer. It just needs to be used quickly once mixed since the hydrogen peroxide is used up quickly and so it doesn't have the shelf life of star san solutions.
While OXY ( I use that in the generic sense) are not sanitizers, they do a good job and destroying cell walls - killing germs in the process. This also makes them a great cleaner (and why my shirts are whiter than when using bleach
) . They dislodge organic matter where sponges cannot reach.
Star San is a food safe contact sanitizer - the food industry and the government balance practicality and public safety with this category which kills about 99% of the germs quickly and without making food unpalatable.
Hospitals on the other hand require higher standards and use disinfectants which kill 100% if germs. In fact, the CDC recommends hydrogen peroxide over bleach for certain parasites that are resistant to bleach.
I use EasyClean (or any Oxy product) to clean knowing it will accomplish a good amount and disinfecting in the process, and then keep a spray bottle of nu-foam (food industry equivalent of Star San) to contact sanitize (these do not requiring rinsing) as insurance.
I keg so I can cover the entire internal surface with a spray bottle. When I did bottle, I never had an infection with a good cleaning and soak in Easy Clean or One Step.