I just think that colloidal silver is overhyped. And many of the products out there are not true colloids, and most have virtually no silver in them. To top it off I think it is ridiculous what they charge when it costs less than $0.10 a gallon to make. When it first came out they were charging $40 to $60 an ounce.
As for the probiotic I don't see anything that special about it. If I needed a probiotic I would use kefir, which is cheaper and has more strains of beneficial bacteria.