8 more bags of chips and first pass of yard is done

Today I laid down 8 more bags of wood chips around the perimeter of the yard, and I am pleased to say that the first pass is done with a total of 84 bags! Before you get too happy though, let me say that it took so long that I already have to go over 1/3 - 1/2 of it again because the chips have biodegraded or been picked up with doggie doo. I am concerned that this is going to be a constant maintenance thing, which I am not pleased about. We are considering changing it to pebbles, but we'll see. One dog uses the chips in the farthest corner of the yard for a bathroom and it is really convenient - easy to pick up and far from the house - so I don't want to mess that up.