When you visit locations whether it be for a service or collection, we expect you to greet the staff and/or owner to let them know you are on site and working on the machine. Not only is this a courtesy, but it will help to secure the site, as they will see you visiting at least weekly and realize what good service they are getting. When a competitor offers a higher commission, if they know you and like you they wont kick you out. Dont sneak in and sneak out - dont be a secret squirrel!