The gutters on my house are constantly being blocked by moss and seeds from nearby tall sycamore trees. I am getting past the point of getting up a ladder to clear them out and am looking for something I can use from ground level. A pressure washer lance would probably work but splashes would mark the white rendering of the house. Are there extension hoses and nozzles that could be attached to a wet-n-dry vacuum cleaner and, if so, how effective are they?