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A layer of pea gravel or crushed stone, 4 inches thick and sloped 5%, provides a pest-resistant ground break around the perimeter of a slab foundation
A layer of pea gravel or crushed stone, 4 inches thick and sloped 5%, provides a pest-resistant ground break around the perimeter of a basement foundation
Concrete (4 inches thick at 5% slope) provides a pest-resistant perimeter around the foundation
Concrete pavers set in 4 inches of sand provide a pest-resistant ground break at the building perimeter.