You know, my husband and I are both in college full-time. Our schedules don't overlap on any day except Monday, when we're both gone for 10 hours. So our solution was to find a pet sitter. So on Monday's we have a wonderful lady come to the house to play and let Cardi out for an hour. Of course he is old enough to hold his pee for a few hours. Maybe you could think about finding a pet sitter. 
