Ok so you're fed up with going up a ladder to clear the leaves out your guttering, or you're fed up with paying someone to do it. What are the alternatives and do they really work?
Let's get one thing clear, whatever method or device you use your gutters will still need clearing from time to time. The only way to ensure nothing ever got in your gutters would be to completely seal them off, which is obviously impractical as the water from your roof needs to drain into them. So if we need to allow the water to get in, you can be sure other debris will find a way in too.