I used Zappers for months with only limited success. Then I did the Beck Protocol and had much better long lasting results. The second time I did the Beck Protocol I used 8 ounces of ionic silver per day and cleared the infection 90%. Later I used Miracle-Mineral-Supplement and then Lugol'sIodine supplementation to get the rest of the way clear.
This infection defeated many other treatments and lasted for 5 years. So at least in my case the Blood Cleanser was needed.