Concrete is porous, and Central Ohio’s heavy clay soils create a hydrostatic pressure gradient that forces moisture—and pests—directly into your foundation. Move beyond the "spray and pray" methodology with a scientifically calibrated Exterior Pest Barrier. This deep dive explores the physics of Darcy’s Law, the chemistry of Cation Exchange Capacity (CEC), and the "Trojan Horse" effect of non-repellent liquid defenses to fortify your home’s structural envelope this spring.