Ralph, no offense was intended - if you interpreted it that way, I apologize. I've heard about every pitch from every sales guy, and it seems that many spend most of their time slamming "the other product" rather than touting their own.
Bottled "live" products don't stay live if they aren't refrigerated.
Using the same logic though, unless you're feeding live foods to all of your inhabitants, it all starts to decompose once it hits (and it does).
The key is not over-dosing, and only feeding if you have things that need that type of food. Consider when dosing such products, that they end up as waste whether or not they are consumed, just like solid foods.
Jenn