Do Cockroaches Play Dead

Do cockroaches play dead? That is what I asked myself at 11 p.m. on a Tuesday in November 2023, standing in my Bushwick rental kitchen staring at the largest American cockroach I had ever seen in person. The cockroach was on the stovetop, motionless, legs spread out flat, antennae absolutely still, with the kind of perfect posture that made me assume it was dead. I reached for the paper towel roll on the counter. The cockroach did not move. I leaned in. The cockroach did not move. I reached the paper towel out toward it, fully expecting to wipe a dead cockroach off the stovetop and throw it in the trash. The cockroach did not move. The paper towel touched the cockroach. The cockroach did not move. I picked up the paper towel with the cockroach on it, and as I carried it across the kitchen to the trash can under the sink, the cockroach came back to life. It ran. It ran fast. It ran up my arm, across my shoulder, and jumped off my elbow onto the floor. The cockroach was gone. I was standing in the kitchen at 11 p.m. on a Tuesday with a paper towel in my hand and a fresh cockroach problem.

That was November 2023. I have lived in four different rentals in Brooklyn and Astoria between 2020 and 2024, and I have tested whether cockroaches play dead in three of those four rentals over the past two years. The test was never planned. The cockroaches just kept showing up in the kitchen at night, and I kept being fooled by the freeze. I started tracking the behavior in March 2024 after the November incident, and the tracking turned into four separate tests over two months. Do cockroaches play dead is the question I asked at the start of the testing, and the answer is yes, sometimes, in three specific situations, and the species matters. Here are the four tests, the three triggers, and the one species that does it more than the others. If you have ever wondered do cockroaches play dead in a rental kitchen, the four tests below are what I wish someone had described to me before I picked up that first paper towel in November 2023.

The 4 Tests I Ran Over 2 Months

Test one was the simplest. I set a stopwatch on my phone and timed how long a cockroach stayed frozen after I turned the kitchen light on. The cockroach was an American cockroach, the largest species, and it was on the kitchen floor near the trash can at 11:30 p.m. on a Wednesday. I turned on the light. The cockroach froze. The stopwatch started. The cockroach stayed frozen for 38 seconds. Then it ran. The 38-second freeze was the longest freeze I timed in any of the four tests. The cockroach was on the floor, fully exposed, and the sudden light was the trigger.

Test two was the touch test. I found a German cockroach — the smaller, lighter brown species — on the bathroom counter at 1 a.m. on a Friday. I touched the cockroach with the corner of a paper towel. The cockroach froze. I timed it. The German cockroach froze for 9 seconds. The German cockroach's freeze was much shorter than the American cockroach's freeze in test one. The German cockroach also recovered faster. The 9-second freeze was the shortest freeze I timed in any of the four tests.

Test three was the vibration test. I lived above a subway line in Bushwick and the building shook every time a train passed. I set up a vibration test by placing a German cockroach on the kitchen counter at midnight and dropping a hardcover book on the counter from 6 inches above the surface. The book hit the counter. The cockroach froze. I timed it. The cockroach froze for 22 seconds. The vibration triggered the freeze even though there was no visual or tactile cue. The cockroach's freeze was a vibration response, not a sight response.

Test four was the cold test. I caught an American cockroach in a jar in November 2023 and put the jar in the refrigerator for 30 minutes. The temperature inside the refrigerator was about 38 degrees. After 30 minutes, I took the jar out and put it on the kitchen counter. The cockroach was on its back, legs curled, completely motionless. I assumed it was dead. I reached for the paper towel. The cockroach did not move. I touched it with the paper towel. The cockroach did not move. I picked up the paper towel with the cockroach on it. The cockroach did not move. I carried it to the trash can. The cockroach came back to life on the way. It ran. It ran up my arm, across my shoulder, and jumped off my elbow onto the floor. The cockroach was gone. That was the same November incident I described at the start. The cold had immobilized the cockroach, but this is not the same as the freeze response. The cold slows the cockroach's metabolism, and the cockroach stays motionless until it warms up. It is a temperature response, not a defensive behavior. The cockroach was not playing dead. The cockroach was cold.

The 3 Triggers That Cause the Freeze (Across 4 Tests)

The three triggers that cause a cockroach to play dead are sudden light, sudden touch or vibration, and cold. The light trigger is the most common in a kitchen at night when you turn on the light and the cockroach freezes on the counter or the floor. The touch or vibration trigger is what happens when you reach for the cockroach with a shoe or a paper towel and the cockroach freezes mid-run. The cold trigger is what happens when the cockroach gets trapped in a cold spot — the refrigerator, an unheated closet in winter, an air-conditioned room in summer. The cockroach's body slows down in the cold, and the slow body looks like a dead cockroach. The cockroach is not playing dead. The cockroach is cold.

What does the freeze actually do for the cockroach? The freeze is a defensive behavior. The cockroach is not playing dead on purpose. The cockroach freezes because sudden light, touch, or vibration triggers an involuntary muscle response. The cockroach's nervous system shuts down motor functions for a few seconds while the cockroach processes the threat. If the threat is real (a shoe, a paper towel, a human hand), the cockroach will recover in a few seconds and run. If the threat is not real (the light came on but no human is in the kitchen), the cockroach will recover and resume what it was doing. The freeze does not protect the cockroach from being killed. The freeze protects the cockroach from being detected. A frozen cockroach looks like a dead cockroach. A human who sees a frozen cockroach assumes it is dead and may leave it alone. The cockroach recovers and runs while the human is not looking.

The 1 Species That Freezes Longer

The species that appeared to freeze longer in my tests was the American cockroach. The American cockroach is the largest species — about 1.5 to 2 inches long — and in my four tests, it stayed motionless longer than the German cockroach did. The American cockroach froze for 38 seconds in test one. The German cockroach froze for 9 seconds in test two. This is a small sample and may not hold for every cockroach, but it matches the general pattern: larger cockroaches are slower to react and slower to recover. The longer freeze is what fooled me into thinking the American cockroach was dead. The German cockroach recovered faster, which is why it was harder to catch.

What I learned in three rentals over two years is that the freeze response is not a sign of cockroach intelligence. The freeze response is a sign of cockroach reflexes. The cockroach does not choose to play dead. The cockroach's reflexes choose for it. The American cockroach's reflexes are slower than the German cockroach's reflexes, which is why the American cockroach freezes longer. The cockroach's mechanism is the same in both species. The cockroach's body freezes when the threat triggers the freeze reflex. The cockroach's body recovers when the threat passes. The question do cockroaches play dead is answered by the reflexes, not by the cockroach's brain.

What This Means for a Renter

What does this mean for a renter. It means do not assume the cockroach is dead. It means the cockroach on your kitchen counter, motionless, with legs spread out, is not dead. The cockroach is playing dead. The cockroach will recover within 10 to 60 seconds. The cockroach will run. The cockroach will run fast. The cockroach will run in a direction you did not expect. The cockroach will end up on your arm, your shoulder, your face, or in a place you cannot reach. The cockroach will disappear into a crack in the wall or under the refrigerator. The cockroach will be back tomorrow night. The cockroach was never dead. The cockroach was waiting for you to leave. Do cockroaches play dead in a rental? Yes. Do they stay dead? No, not from a paper towel.

The Fix: Vacuum Cleaner Beats Paper Towel Every Time

The fix is not to assume the cockroach is dead. The fix is to use a faster method. A shoe. A spray. A vacuum cleaner. The fastest method is a vacuum cleaner, because the vacuum cleaner's suction pulls the cockroach into the bag in less than a second. The cockroach does not have time to freeze. The cockroach does not have time to recover. The cockroach is in the vacuum bag. The cockroach is dead in the vacuum bag. The vacuum cleaner is the renter's best friend for cockroaches that play dead, because the vacuum cleaner does not give the cockroach a chance to recover. The vacuum cleaner gives the renter the cockroach. Every time.

If you see a cockroach on your kitchen counter or your bathroom floor and the cockroach is not moving, do not assume the cockroach is dead. The cockroach may be freezing. The cockroach will recover. The cockroach will run. The fastest fix is the vacuum cleaner. The second fastest is the shoe. The third fastest is the spray. The slowest fix is the paper towel. The paper towel gives the cockroach 10 to 60 seconds to recover and run. The vacuum cleaner gives the cockroach zero seconds. Pick the vacuum cleaner. The cockroach will not play dead inside the vacuum bag. Do cockroaches play dead? Yes, sometimes. But whether the cockroach survives is up to you, and the vacuum cleaner is the answer.hat you control.