How Rodents Find Their Way Into High-Rise Buildings and Why No Floor Is Completely Safe
Rodents reach every floor of a high-rise by climbing pipes, wiring, and rough walls, then traveling through elevator shafts, garbage chutes, and HVAC ducts that run vertically through the building. A 20th-floor unit can get mice or rats even if the resident never leaves a window open, because the entry point is often floors away. A resident on the 22nd floor of a downtown Toronto condo finds mouse droppings behind the stove and assumes it must be a one-off — surely nothing climbed 22 storeys to get there. In reality, that mouse likely never climbed the outside of the building at all. It came in at ground level, then used the building's own infrastructure to travel straight up. High-rises feel sealed off from the ground in a way houses don't. That sense of safety is misleading. Once a rodent gets past a building's ground-floor defenses , height stops mattering — the building itself becomes the highway. Table of Contents Why Height Doesn't Stop Rodents The Vertical Hig...