Final answer:
Handwashing with soap and water is the most recommended method for microbial control in routine situations, as it is highly effective in preventing the spread of various diseases.
Step-by-step explanation:
The method of choice for achieving a sufficient level of microbial control in routine day-to-day situations is handwashing with soap and water. This practice is considered the single most important behavior to avoid infection by pathogens. The most effective handwashing method involves using soap and warm running water, as recommended by health organizations. Washing your hands helps prevent the spread of waterborne diseases, reduces the transmission of respiratory illnesses like flu and COVID-19, and is more effective than other methods such as using hand sanitizers or wearing gloves for routine microbial control.