Besides the obvious: their fingerprints end up all over the window only seconds to minutes after you've cleaned it making this a very futile endeavor, there's the less than obvious but very real possibility of one child spraying the other child in the face with the Windex that's left on the stairs to be taken upstairs on the next trip. Yes, I had a bad mommy moment today, but don't we all?!
I did leave the Windex within reach of my two near 3 yr. old boys, one of whom (will remain unnamed) sprayed the other in the eyes. For your reference, Windex is seemingly rather harmless when sprayed in the eyes with it per the Windex company people, but if your child has eye issues, you may want to call your eye doctor just to make sure no further action is necessary. (Guess that little bit of information gives away who sprayed who, huh?!) :)
All parties involved in our little incident today seem to be fine, but this momma is going to think twice next time she gets the compulsion to clean her windows. What was I thinking?!