The reason the West Side needs a full-service exterminator is that Lincoln Park changes everything about the pest profile compared to the interior Journal Square blocks. The blocks bordering the park sit against mature parkland with wooded edges, standing water, and wildlife corridors, which drives heavier Aedes albopictus mosquito and blacklegged tick pressure than the dense PATH-hub streets carry. Mature street trees along the residential blocks give eastern gray squirrels canopy access to the soffits and attics of the older two-families, so attic wildlife work is a steady seasonal call rather than an occasional one, and the alley networks behind West Side Avenue produce raccoon activity wherever the garbage corridors fill up.
The older residential housing stock generates the rest. Norway rats work the foundations of the walk-ups and the basements of the two-families; house mice exploit the gaps that pre-war residential construction leaves around radiator pipes, plumbing penetrations, and old foundation cracks; and carpenter ants colonize the damp basement and porch framing wherever a roof or plumbing leak has gone unrepaired. Subterranean termites appear in the sill plates of the older wood-framed homes, especially where crawl-space or partial-basement construction puts wood near grade, and WDI inspections for sales are routine when the housing turns over. German cockroaches and the everyday nuisance spectrum show up in the West Side Avenue commercial mix and in the residential units of mixed-use buildings.
