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Also asked, where do roaches usually hide?
They prefer to live and feed in the dark, so acockroach seen during the day is a possible sign ofinfestation. Cockroaches tend to prefer dark, moist placesto hide and breed and can be found behind refrigerators,sinks and stoves, as well as under floor drains and inside ofmotors and major appliances.
Secondly, can roaches come up through the toilet?
Swimming Ability Outside vents allow air to enter the drainage pipes astoilets flush and pass unpleasant sewer gases to the outsideof the building. Water traps block the passage of most insects, butcockroaches can find their waythrough.
Cockroaches are attracted to food that has been left outon the counter, dirty dishes in the sink, and crumbs laying on thefloor. They are also attracted to moisture, such as from a leakypipe underneath a bathroom sink or a wet bathmat on thefloor.