After cleaning gutters for over 30 years in Michigan we have accepted the fact that the leaves in your gutters will be frozen solid before all of the leaves from the trees have fallen. Leaves from Oak and Aspen may even be on your trees well in to January. So we have learned that twice a year is the best way for customer satisfaction and home maintenance. If there is a good long four day and night thaw in December, January or February the second cleaning will be in the winter, if not the second cleaning will be in March or April. We will be striving to work with the weather and to do what is best for you. Set it up and forget it Pre-Schedule NOW for our Twice-A-Year Program and get scheduling priority in the fall and again in the thaw, PLUS SAVE 10% over our "On Call" pricing.