I dust my house twice per week and disinfect the house such as counters, toilet etc every 3 to 4 days.
During the flu season I disinfect the countertops, doorknobs etc everyday to prevent the spread of flu and cold germs and viruses.
As long as you're disinfecting your home with disinfectant and hot water every 2 to 3 days or at least once per week when you have time then you're doing okay to keep the germs and viruses at bay.