I have 3 kids, I can tell you that these things either last forever or turn into the most god awful slurry of mush you'll ever see. I wouldn't recomend using them in the secondary unless you want them to first swell into a massive cheerio paste and then dissolve into a bottom sludge, the like you've never seen. I can't imagine they'll offer any benefit since everything will be cooked out of them in the cereal process. Just use Flaked oats.
Primary 1: Beach Bum Belgian Peach Ale
Primary 2: Jen's Juice Belgian Blonde
Primary 3: Black Dog IPA Deuce
Primary 4: Hair of the Dog Breakfast Stout
Primary 5: Kia's Killer Wheat
Primary 6: Scrapyard Pepper Porter
Drinking: Big Wave IPA, Cascade Falls IPA, Junkyard Imperial Stout, Jonesy's English Nut brown, Mashugana Porter, Italian Pale Ale, Belgian Farmhouse Rye