the port-o-potty diet (or... can we clean the cat box now?)

ingredients:

cat(s) (the more the merrier)
dog(s) (the older the better)
will power

Mix dog(s) with cat(s) in confined space and leave overnight
allow dog(s) to have accidents on carpets and floor
allow cat box to remain uncleaned for at least a week
stir cat box occasionally so cat(s) will continue using it
add will power to prevent cleaning
add additional will power to refrain from eating outside of the house

after the first week, the living space will begin to smell like a port-o-potty and reduce the appetite... continue for a month and food consumption will be minimal... with sufficient will power to refrain from eating outside of the house, weight loss will be maximized

Note: extreme poverty can substitute for will power