Well, I posted again to this thread a couple of days ago, with my findings on my trial, but it's not on here anymore. Guess a mod deleted it?
Anyway, I used DB on one of my 14 bin rat racks, kept records on it and the rack next to it on ADM rodent blocks. Except for an occasional dead birth, I had no cannibalism on my ADM rack. On average, the litters were significantly larger on my ADM rack. And, I had a couple of adult deaths in the DB racks as well.

Now, I used to use DB on my mice and ASF's as well. Mice suck on DB. Too much cannibalism, numbers were down probably 60-70 percent. ASF's, as we all know are complete sex addicts. On DB, I hardly ever had babies. Since taking them off of DB and putting them back on rodent diet, I'm literally overflowing with ASF's, and I don't have a large colony(at least I didn't). Now, I'm constantly seperating males, and I can't feed them off fast enough. Almost every reptile in my store and my personal collection has been on an ASF diet for months.
I know there are plenty of people out there using it, and probably without any problems, but in my case, I was losing tons of money on the stuff.