I have been saying the same thing for years..... and the same for kids....let them play outside and get dirty, don't sterilize everything they touch.....and all these bacteria killing cleaners are great, but I don't use them that much (love the clorox wipes tho...only thing I have found that gets rid of the musk smell!!!!) if the kids aren't exposed to any bacteria, they don't build any immunity...then we sterilize everything, the tougher bacteria survive, and then when th ey get exposed...they get the nastiest butt kicking infection!!!!