15 counties in Maryland fall inside the metro areas PestReach USA covers. Each county page sets out its local pest pressure and the metro guides that serve it.
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Start from the county. In Maryland, 15 counties fall inside the metros PestReach USA covers — the Baltimore, Hagerstown, Lexington Park areas among them — adding up to about 6,071 square miles. Pest pressure is read at this level because it is the level providers work at: routes, licensing and local rules all resolve to county and metro long before they resolve to state.
Read down the list and the pattern is geographic: the counties nearest a metro core carry its density problems, the outer counties carry the edge-of-development ones — new subdivisions against farmland and woodland — and every county page on this index sets out which pattern applies there, and why.
By land, the covered counties run from Frederick County (661 sq mi), Baltimore County (598 sq mi), Montgomery County (493 sq mi) down to Baltimore city at about 81 square miles. The metros anchoring coverage are Baltimore (metro population 2,857,781; 7 covered counties in Maryland); Hagerstown (metro population 315,280; 1 covered county in Maryland); Lexington Park (metro population 211,176; 2 covered counties in Maryland). Those numbers are the frame for everything on the county pages below: area sets how rural a county reads, the metro sets its pest calendar, and the two together set what providers actually deal with there.
Weather sets the calendar, and in Baltimore — the state's anchor metro — it reads: 44 inches of precipitation annually, average temperatures around 59°F, 43 days reaching 90°F and 52 freezing days. The counties below share that regime; what changes county to county is housing, land and distance from the core.
Statewide, the recurring names on county pages are subterranean termites, ticks, carpenter ants — the signature of midatlantic country. The biggest covered county, Frederick County (661 square miles), is served through the Washington metro; metro-level guides live on the Maryland state page.
The communities county residents actually name: Baltimore (about 577,193 residents), Columbia (about 105,871 residents), Ellicott City (about 73,737 residents), Glen Burnie (about 72,772 residents), Dundalk (about 65,441 residents), Severn (about 58,041 residents) are the largest covered communities on this index; each sits inside one of the counties above, and its county page carries the local pest reading for that ground.
Baltimore — 2,857,781 residents, 7 counties. First on its watch list: subterranean termites, then ticks and carpenter ants — the pattern of a metro where humid summers and cold winters that swing pressure between termites, ticks and overwintering invaders.
Hagerstown — a metro of 315,280 across 3 counties, where the watch list runs subterranean termites, ticks, carpenter ants — the standing pattern where humid summers and cold winters that swing pressure between termites, ticks and overwintering invaders.
Lexington Park — a metro of 211,176 across 2 counties, where the watch list runs subterranean termites, ticks, carpenter ants — the standing pattern where humid summers and cold winters that swing pressure between termites, ticks and overwintering invaders.
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