Condo Pest Control
Unit owner and board responsibilities.
In a co-op, your proprietary lease and the board decide who fixes what.
Short answerCo-op pest control follows the proprietary lease and house rules. Boards often run building wide pest control, and shareholders may need board approval or use of an approved provider. Check your documents before hiring anyone.
Many co-ops have a set pest control program and rules for outside contractors. Ask the managing agent what is required, and report problems in writing so there is a record.

A co-op's own pest control program and house rules usually come first. Check what the proprietary lease requires before hiring anyone on your own.
Activity in a shareholder's unit can come from common areas or neighboring units. Coordinate with management so common areas are inspected too.
Inspect the unit, explain the findings and work with the board or managing agent where access to common areas is needed. See multifamily building pest control.
Not sure what you are dealing with? An inspection finds the source and sets the scope.
Attached buildings share wall voids, pipe chases, risers, trash areas and basements. Mice use those as travel routes, so treating one unit can push activity next door and back again. Lasting results in multifamily buildings usually depend on inspecting common areas and coordinating with the owner or manager, not treating a single apartment in isolation.
In most NYC rentals the owner is responsible. City rules require property owners to keep buildings free of rats, and owners of buildings with three or more apartments must also address pests inside apartments under Local Law 55. Tell the landlord or managing agent in writing, keep a copy, and use 311 if nothing happens. This is general information, not legal advice.
Unit owner and board responsibilities.
Common areas, supers and building wide plans.
Activity that keeps coming back usually means the source or the entry route is still open. More traps do not fix that. An inspection looks for where they are getting in and what is drawing them.