I am starting a business and was wondering what people think of this idea and if anyone already uses it. Every time I service a house I would leave a business card on the door or in the mail box that has a space on it to fill in the date and time and services preformed on the yard. That way the customer knows I've been there every week. Even if I did 2,000 cuts a year it would be less then $100 for the cards. What do you think? Too much to get one every week?