Regular sanitizing and disinfecting of surfaces is important to remove bacteria and harmful substances from living spaces. The frequency of sanitizing and disinfecting can vary depending on factors like surface material, household size, and pets. As a general guideline, all surfaces should be sanitized once per week or more if needed, disinfected every two weeks or more if needed, and cleaned daily. A professional cleaning service can provide a customized sanitizing plan based on the specific characteristics of a home.