Cockroach Poop on Walls? Here’s What To Do

Cockroaches, those pesky household pests, can easily find their way into our homes, making us cringe at the thought of their presence. A common sign of their unwelcome visit is the unsightly and potentially hazardous roach poop they leave on our walls. 

In this article, we’ll guide you through the process of dealing with this issue using simple steps and everyday items you probably already have.

cockroach poop on walls

How Do Cockroaches Get Into Your Home?

Before we jump into cleaning up cockroach poop, it’s helpful to understand how these critters find their way into our living spaces.

Cockroaches are drawn to warm, damp environments, and they can sneak in through small cracks, crevices, or even hitch a ride on bags or boxes brought inside. They particularly love hiding out in kitchens and bathrooms, where moisture and food sources are abundant.

Identifying Cockroach Poop on Walls

Spotting cockroach droppings on your walls might not be the most pleasant discovery, but being able to identify them accurately is the first step toward addressing the issue.

Cockroach droppings, also known as fecal matter, can vary in appearance depending on the species of cockroach and the size of the roach. Here’s how you can identify cockroach poop on walls:

  • Appearance: Cockroach droppings typically resemble small, dark or black pellets. They can range from tiny specks to larger, rice-sized pieces. The shape might resemble cylindrical or oval pellets, and they often have rounded ends.
  • Color: The color of cockroach droppings can give you a clue about the type of roach you’re dealing with. Fresh droppings from German cockroaches are dark brown or black, while those from American cockroaches tend to be a bit larger and darker in color.
  • Location: Roaches tend to defecate in areas where they spend a lot of time, such as their hiding spots or routes to food and water sources. Look for droppings in corners, along baseboards, near cracks, and behind appliances.
  • Smear Marks: Sometimes, you might not find the droppings themselves, but you might notice smear marks left by cockroaches dragging their feces along surfaces. These marks can also be dark and look like streaks on walls or other surfaces.
  • Frequency: If you consistently find these droppings in the same area, it’s a strong indicator of roach activity. Frequent sightings of droppings suggest a larger roach population.

Cockroach Poop on Walls: What to Do

Discovering cockroach droppings on your walls might make your skin crawl, but it’s important to address the issue promptly. Not only are roach droppings unpleasant to look at, but they also carry harmful bacteria and can even trigger health problems. So, let’s get to addressing the issue.

Step 1: Identify Problem Areas

Roaches have a preference for dark and moist places. Check these areas, along with cracks and corners, to pinpoint where they might be hiding out.

Step 2: Gather Your Cleaning Tools

You don’t need anything fancy to clean up roach poop. Grab a vacuum cleaner with a HEPA filter, a damp cloth or sponge, and a household disinfectant or a simple bleach solution.

Step 3: Vacuum Up Loose Droppings

Using the vacuum cleaner with a HEPA filter, carefully vacuum up any loose roach droppings. This will help eliminate not only the droppings but also the bacteria they carry.

Step 4: Wipe Down and Disinfect

Dampen a cloth or sponge and gently wipe down the affected areas to remove the remaining residue. Then, apply a household disinfectant or a diluted bleach solution. Be sure to follow the product instructions to ensure safe and effective use.

Step 5: Dry the Area

After disinfecting, use a clean, dry cloth to thoroughly dry the area. Moisture can attract roaches, so keeping the space dry is key to preventing re-infestations.

Step 6: Prevention Measures

To keep those roaches at bay, seal up cracks and openings in walls that might serve as entry points. Additionally, maintain a clean and clutter-free environment, as roaches are attracted to messes.

Dealing with Stubborn Stains or Residue

For tougher stains or residue, follow these steps:

  • Begin by vacuuming up loose droppings as usual.
  • Mix equal parts water and white vinegar in a bowl.
  • Use a clean cloth to apply the vinegar solution to the stains.
  • Let it sit for a few minutes before scrubbing the area with a brush.
  • Rinse the area with clean water and dry it off with a clean towel.

Proper Disposal of Cleaning Materials

After you’ve successfully cleaned the area, it’s important to properly dispose of the materials you used. Seal any cloths, sponges, or vacuum bags that came into contact with roach droppings in a plastic bag before placing them in the trash.

Cockroach Poop on Walls: Related FAQs

Can cockroach droppings make me sick?

Yes, cockroach droppings can pose health risks. They contain bacteria that can trigger allergies, asthma, and even spread diseases like salmonella and E. coli. Properly cleaning and disinfecting areas with roach droppings can help reduce these risks.

What’s the difference between using bleach and a household disinfectant for cleaning roach droppings?

Both bleach and household disinfectants can effectively kill bacteria and sanitize surfaces. Bleach is a stronger disinfectant, but it can also be harsh on some surfaces and emit strong fumes.

Household disinfectants are milder and often come in more user-friendly forms, but they might require more thorough application for the same level of disinfection.

Are there natural alternatives to bleach for cleaning up roach droppings?

Yes, you can create a natural cleaning solution by mixing equal parts of water and white vinegar. This solution can help break down stains and sanitize surfaces. Additionally, some essential oils like tea tree oil and eucalyptus oil have natural antimicrobial properties and can be added to your cleaning solution.


Dealing with roach poop on walls might not be anyone’s favorite task, but it’s a necessary one to ensure a clean and safe living environment.

By following these straightforward steps, you can effectively clean up the mess and take proactive measures to prevent future roach infestations. Remember, a clean home is a healthy home, and with a little effort, you can keep those unwanted roach visitors at bay.