I have been doing lawn care for about 3 years now. Although I have learned ALOT from this site, magazines, and just listing to people there are still something I dont know. I always try to look and act professional but when someone ask me something I dont know the answer to I feel un-professional. So my question is what do you say to a customer when you dont know the answer? Also what if they ask for a service you dont offer yet what do you say then? Any tips or suggestions would be great. Thanks.