 You use it three times a day for three weeks, and you will know if it works for you. It works for me. I only did four yesterday. I did ten the day before, and it is muggy in Maine. I mean, it is really... Humidity has come up from the Beltway. What I run away from every summer and freeload off my brother-in-law for is because the humidity is awful, and he doesn't mind. So I am heading out to do my trundle after the program, courtesy of relieffactor.com. You can, too.