I'm with ****o1 on the rocks. I moved into a house that was heavily landscaped and river rock was used liberally. It ended up everywhere. This was primarily because of my young kids. The rocks ended up in the yard, scattered around the landscaping, in the garden, in the driveway, stuffed in the downspouts by the kids, in the house as collector's items(also by the kids), in the street, in the flower pots, you name it. Mulch was significantly easier to maintain for me. Granted, now that the kids are a bit older they are learning their lessons, but that was enough to ban rocks forever on my property... If that is not an issue for you, rocks stay in place much better when using a leaf blower to clean things up!