This may be obvious to some, but I questioned "Microbes." What are "Cancer Microbes?"
The answer is that they could be fungus, bacteria or virus. All 3 kinds of microbes can cause cancers. Bacteria & fungus are self replicating while virus must hijack a cell to replicate.
So the answer is that Colloidal Silver kills all bacteria, virus & fungus. And this is why DMSO is helpful to open up the cell walls to get Colloidal Silver inside the cell to kill the virus.
This is of course over simplified. Google "Cancer Virus," "Cancer Bacteria" and "Cancer Fungus" for a more detailed explanations.
One example given is feeding the pet colloidal silver instead of water and then all tumors were cured. An amazing revelation is that sickly pets choose to drink colloidal silver instead of water when both are presented ! Caution may be required because too much colloidal silver for too long could cause Argyria, the infamous blue-gray skin.