Every morning when I get to work I text each boy their "chores of the day".

If slightly more than half-hearted effort is given the tasks will take less than an hour each day.

Today is the first day neither boy finished.  Middle Boy did make an effort.  Younger Boy didn't do a single thing.

The rule is that the work needs to be done by 5PM when I return home from work.  If the chores are not done you have one day grace to finish them up and after that you lose privileges.

They are going to have a lot to do tomorrow.  Not my problem.