To cut down on dirt getting tracked into the house, I have the kids take their shoes off as soon as they come in the house and put them on the stairs. I only want one pair for each of them on the stairs to keep them less cluttered. Kids being kids, there are more times than not when there are eight, nine, ten pairs of shoes falling down the steps. All it takes is for me to yell "one pair on the stairs guys!" and they will come running to set it all to rights. Katie, however, is having a wee bit of trouble with the whole concept of "one pair."