In many ways it is best to clean your rain drains in the winter since that is when we get the most rain to test your system. As long as the water is not frozen, we can determine what is causing your blockage issues. Clogged drains rarely present themselves on nice sunny 80 degree days. Its great to have peace of mind when your looking out your window on a rainy day and knowing that your rain drain system is working properly and water is not causing any damage to your home.