Found a cockroach? (Saw a GAZILLION?) Don’t panic.
To find the lair, think like a roach
Four species of cockroach are common pests in New York: the German cockroach, American cockroach, oriental cockroach, and brownbanded cockroach.
Cockroaches are nocturnal and live in groups. They seek cracks and crevices that are warm, dark, and moist; they also live inside cardboard and paper bags. Roaches eat anything that is organic–even cardboard and the glue that binds books together. They need water, although the brownbanded can live for several weeks with minimal quantities. Cockroaches prefer to remain near their food sources and shelter. Take away both and the roaches will almost certainly seek a more hospitable home.
To begin a management program, try to find the source of the infestation and discover which roach is present. Use "sticky traps" to capture the roaches and the chart in this brochure to identify the species, or consult other knowledgeable sources.
Use a flashlight and dental mirror to peek behind or under cabinets.
Draw a simple diagram of each room, then begin your inspection. Use a flashlight and dental mirror to peek behind or under cabinets. Search for living or dead cockroaches, shed exoskeletons ("skins"), egg cases, and feces. You can also find their hiding places by quietly entering a dark room and watching where they run when you turn on the lights.
Place the sticky traps near any evidence of roaches, near cracks in the basement, or as indicated in the kitchen diagram. Mark these spots on your drawing, write the date on the traps, and check the traps weekly. Record the date, location, species, and number of roaches caught. Later on, you can set more traps to judge the success of your efforts.