I'm no scientist, but how much splenda did they feed to the animals? 1 package in their morning coffee? I guess I am more of a realist, everything in minimal amounts should be okay, well except for lead (haha).

I think that people should be alot more concerened with exposure to their household cleaners, etc. If it really bothers you then cut out the Splenda and use Stevia (a natural herb) instead.