Product review (5 stars): Excellent device! You just need to establish a simple ...
Excellent device!  You just need to establish a simple household rule:  The first person to open the DW in the morning (assuming a wash at night) either empties the unit and RESETS THE BLUE BUTTON, OR, if the unit is not emptied, LEAVES THE BLUE BUTTON ALONE!  Once the teenagers had to rewash the dishes by hand, they got the message!