Say you finally have your big army and a good soldier to enemy kill ratio. For your army to win the war(not just a single battle) you must keep them on the field of battle until ALL of the enemies have been eliminated or until such time as your army receives reinforcements from the locals (your own immune system).
What I am saying is that for this 'particular army' to be effective, you must keep the solution on the effected area for some length of time. Using a cotton ball or like material to keep a steady of supply of soldiers at the ready is the most effective to win the war. Most people don't realize this and most vendors do not give any information relative to effective application. They just sell the army and tell you why their army is the best one on the planet. It may be true that a better army will do a better job in a shorter period of time. However, this a fierce ground battle and ground battles aren't over in nanoseconds... :^)
People are all different, wounds are different and the healing time may vary. It has been my experience that immersion for 90 to 120 seconds works well. Repeating the treatment two to three times a day is also good. However, many people do not want to do this and so..... out comes something to slap on during the commercial.
Also, I only use this as a topical solution.