My science experiment

I am so done repeating myself day after day...pick up your clothes...clean your room. So...to amuse myself and make a point I am doing a science experiment. How many days will it take for a 10 year old and an 8 year old decide to clean their room on their own free will and choice? How bad will it have to get before they give in and clean. My Hypothesis? I really don't have one...I am hoping one week, but realistically I am thinking close to three weeks. They do not know about this experiment so keep it hush hush. I did start them out right and cleaned their room for them. This photo is day one of the experiment...I will keep taking photos for updates.