Content updated: May 27th, 2026

Key takeaways

  • Cockroach behavior is primarily nocturnal, meaning most cockroaches are active at night and avoid light.
  • Cockroaches are not attracted to light and are usually repelled by it, which is why they scatter when lights are turned on.
  • Seeing cockroaches during the day may indicate a larger infestation, often due to overcrowding or limited food sources.
  • Cockroach prevention focuses on removing access to food, water, and shelter, including cleaning surfaces, fixing leaks, and sealing entry points.
  • Professional pest control is often the most effective way to get rid of cockroaches, since prevention methods alone may not fully eliminate them.

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Cockroach behavior

Cockroach prevention

How to help get rid of cockroaches

Picture this: You’ve just wrapped up a late-night TV binge and head to the bathroom. You flick on the light, and suddenly cockroaches scatter across the sink and tub.

What is it about cockroach behavior at night? Are cockroaches attracted to light or repelled by it? And most importantly, what steps can you take for effective cockroach prevention and control?

Cockroach Behavior

Almost all cockroaches are nocturnal, which means they’re active only at night. So are cockroaches attracted to light? Nope. Most don’t like it one bit. That’s why they tend to scatter when you walk in a room and flick that switch.

And it’s not just artificial light that cockroaches dislike. They’re not fond of natural light either. Because of this, you’re unlikely to see them during the daytime. If you do notice one during the day, it may be because the roach got crowded out of its home or was forced out of hiding due to a lack of food. In fact, spotting a roach when the sun is still up is a good indicator that you may have an infestation. However, after a while, cockroaches can adapt to their environment and become acclimated to light. 

What if you just see one cockroach at night? Does that mean it was just a rogue roach that wandered in? It’s possible, but probably not likely. Cockroaches are aggressive breeders, so their populations can grow quickly. As a general rule of thumb, where there is one cockroach, there are likely many others.

Cockroach Prevention

Roaches are like people in that they have three basic needs: food, water and shelter. Knowing that, here are some things you can do to help keep cockroaches from setting up camp in your home:

  • Don’t leave out pet food or water
  • Fix leaky faucets, inside and out
  • Wipe down sinks before going to bed
  • Keep surfaces wiped down and free of food particles
  • Clean under appliances, including toasters, refrigerators and stoves
  • Regularly vacuum
  • Inspect your home for cracks and crevices and have those properly sealed
  • Have wire mesh properly placed over appropriate vents
  • Install weather stripping on doors
  • Trim ivy and trailing vines from your home
  • Have a professional cut back branches hanging over your home
  • Properly store firewood and debris piles far from your home
  • Keep mulch and pine straw at least 1 foot from your house
  • Clean any fallen fruit or vegetables in your yard
  • Seal your compost bin
  • Secure trash can lids

How to Help Get Rid of Cockroaches

Prevention methods like the ones mentioned above only go so far. They won’t guarantee that roaches stay out of your home, and once they get in your home, what can you do?

Overall, your best means of cockroach control is to use a professional pest control service like Terminix®. A trained technician can examine your situation and knows the effective ways to control it, as well as how to help prevent cockroaches from coming back.

Have you spotted a cockroach in your home? Waiting to get the matter under control may lead to more roaches. Remember, they reproduce quickly. Enlist the help of a trained Terminix technician who can help remove roaches and work with you to set up a cockroach prevention and control plan.

 

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