buzzardb267 said:
I did something similar with my three girls. On Friday night they were told to wash dishes and clean the kitchen. Saturday morning we were going to be gone most of the day and the kitchen was untouched. We had a side by side refrigerator, so I took a bicycle lock and locked the refrigerator/freezer. I left a not something to the effect "the combo for the lock on the refrigerator is hidden in the house. When the kitchen is cleaned as directed, I will reveal the location of the combo. Signed....Management.
They youngest called about 11:30 to tell us the kitchen was cleaned and they were hungry!