Bob, When the wind blows, it blows leafs in my garage. Really doesn't matter how far away the trees are.
I know how crazy this may sound, but it really works. I have two pressure washers, 2600 & 4000 psi both with rotary nozzles. They are better than any leaf blower on the market. Gets leafs out of flower beds without doing a lot of damage to flowers too. Just don't want your neighbors see you doing it. Try it, it really works well and fast. If you do it on a windy day, you can blow the leafs out of your yard back to your neighbors, which in my case is a corn field.