Home Depot and the law firm, he said, were playing a numbers game: They don't need to go to the trouble and expense of suing. They just need to scare enough people, whether guilty or innocent, into settling their claims. About 20 percent of people who get the threatening letters, he said, settle and pay the demanded fees. That practice, he said, nets the law firm, which provides the same service for other retail clients, millions of dollars. The firm remits about 75 percent of what it collects to clients, such as Home Depot, and keeps the rest, he says.