Landscaping around structure using natural materials

[Gary S]

Wayne, I actually used a trick that I believe you once mentioned to me - It isn't mandatory to permanently fix the ground cover around the building. By leaving it loose, the building can be removed from the layout for remodeling, cleaning, etc. And when the building goes back, just sprinkle some ground cover around the foundation again.

But to answer your question, the fixative of choice would simply be... gravity!