Final answer:
The best treatment to eradicate a bacterial infection with penicillin-sensitive bacteria is typically with antibiotics such as penicillin, administered either orally or topically for home treatment.
Step-by-step explanation:
The treatment to eradicate bacteria depends on the type of bacterium causing the infection. However, historically, infections by the bacterium Staphylococcus aureus could be treated with penicillin. Broad-spectrum antibiotics like penicillin and erythromycin have been observed to effectively control bacterial infections, such as those caused by C. diphtheriae. Also, penicillin is the treatment of choice for syphilis. But it is crucial to note that in instances of bacterial toxin production, antibiotics may not affect the preformed toxins, and in such cases, antitoxins are necessary. For bacterial infections where antibiotics are suitable, two routes of administration are typically considered convenient for home administration: oral and topical.