I know the very fisrt thing I do when I take care of people dogs that they have not bothered with is I get to work, if they feed to much I feed then a more appropiate amount, if they dont get exersize usally then I wlk then 4 times a day, if they are not well behaved I start training. I dogsit in the people homes though, and when they come home I often get comments like "wow! what did you do? they always jump around and bark when we get home and when we got back they were quiet and polite!" <----an actuall comment I have gotten. I foger this is my chance to show then what their dog CAN be if they are willing to try, and once people get a taste of it, I have found then to try harder.