Multi-family walk-ups around McGinley Square and the PATH plaza. The older walk-up rental stock concentrates both species — Norway rat from the alley pressure and house mouse through the radiator and pipe penetrations that pre-war apartment construction tends to leave unsealed. A complaint reported in one unit usually signals activity throughout the building, because mice fit through any gap larger than a quarter inch and the wall voids carry them between connected units. We map the exterior perimeter with the landlord, install tamper-resistant bait stations along the alley and foundation line, run interior trap grids on the floors with active sightings, and seal the foundation and utility penetrations that let the population move in.
Restaurants and food retail — Sip Avenue, Bergen Avenue, Newark Avenue, Five Corners. The commercial corridor is the engine of the Journal Square rodent baseline. Restaurant alleys with overflowing dumpsters, propped service doors, and dropped food along the curb feed Norway rat populations that the surrounding buildings then have to defend against. We run restaurants on monthly minimum service with HACCP-aligned documentation, mapped tamper-resistant exterior bait stations along the alley line, sanitation coaching for the operator (because no amount of baiting fixes an overflowing dumpster), and pre-business-hours scheduling that respects the lunch rush.
Mixed-use buildings — restaurants below, residential above. Where ground-floor commercial sits below residential units along Sip and Bergen Avenues, the rodent problem rarely respects the lease line. A rat or mouse population in the basement and the back-of-house service area can push up into the residential floors through utility chases, dumbwaiter shafts, and the gaps around service stairs. Treating just the restaurant or just the residential side leaves the population to re-seed the other. We work both layers together, with exterior bait stations on the alley side, interior trap grids in the residential service spaces, and coordinated tenant-notice scheduling for any in-unit work.
Across all three building types the sequence is the same. We inspect first — species ID, exterior burrow mapping, interior entry-point identification — document the conducive condition (a damaged dumpster gasket, an unsealed dryer vent, a worn service-door sweep), and present a written plan before any work begins. Treatment is exterior-first: alley bait line, burrow work, and exclusion of the entry points outside, then interior trapping once the exterior is under control. Follow-up at 14 to 21 days verifies the population has crashed.