I think her response was in regards to the fact that you already asked this question in your last post (prior to the two identical, presumably double-posted ones -this one and a copy)
And that the question was essentially answered in that post. There are no hard fast facts about this simply because what works for some cats does not work for others, so you basically have to work with finding out what works for YOUR cat. If the max cat gives your kitty high bg, don't use it *shrug*