Fallen Leaves

So, I guess raking up the leaves is just like washing your car:

Wash the car, it rains.

Rake the leaves into piles ready for the next empty trash can and the wind blows them all away. Not out of the yard, drat the luck, just out of the piles so they have to be raked up again.

I need to figure out how to rig something like the Roomba - only for leaves.