How exactly does this thing work ?

Best friends !



I'm not sure when it happens....but at some point from my first to my fifth we stopped running at the sight of the babies putting sand and wood chips in their mouths.
oh and leaves and wrapped candy and paper and that mysterious piece of foam something or other.
I keep my eye on them and if they change color or if I see several legs attached to something that went in...I walk over and take care of it.
Lets all say it together..."What doesn't kill them, makes them stronger" :)