What Commercial Disinfection Is
Disinfection is applying an EPA-registered product to a high-touch surface and letting it sit there long enough to work. That's the whole trade. The product does the job, but only if it stays wet on the surface for the time printed on the label.
Most crews spray and wipe in the same motion. That's not disinfecting. That's moving germs around with a damp rag and an expensive product.
It runs alongside your regular janitorial, not instead of it. Janitorial makes the building look clean. Disinfection handles the surfaces that matter for hygiene whether or not they look dirty.