The term refers to the time required for a hard surface to remain wet in order for germicidal activity to take place. The contact time is highly important when disinfecting because it ensures the product has ample time to work effectively and kill bacteria.
Squeeky Kleen Anti-Virus Disinfectant is both a sanitizer and a disinfectant.
To use as a sanitizer, simply spray on a hard surface and wipe after five seconds. To use as a disinfectant, spray on a hard surface and wipe after five minutes. If the product dries during the contact time reapply and repeat the process again.