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  • May 30, 2025

Do Moth Balls Keep Mice Away?

Dealing with a mouse problem?

Whether it’s your first go-around or fiftieth with these furry intruders, you might be curious about what quick fixes will help you get rid of the problem fast. 

You may have heard advice about household remedies like moth balls. But do moth balls keep mice away, or is it just another old wives’ tale? 

In this post, the team at Banner Pest Services will unravel this pest control myth and explore whether moth balls are the panacea they’re promised to be.

What Are Moth Balls, and How Do They Work?

Moth balls are small, chemical-packed pellets designed to kill moths, larvae, and their eggs when sealed inside airtight containers. They are typically made with active ingredients like paradichlorobenzene or naphthalene, which slowly release toxic fumes. 

While this makes them effective against moths in enclosed spaces, their use as a general pest repellent isn’t as straightforward. These little balls emit gases that can harm people, pets, and even the environment if used improperly.

Plus, they’re really only designed for tight spaces: moth balls work best in confined environments, like sealed containers holding delicate fabrics or furnishings.

The misconception that moth balls can reliably repel mice likely stems from their strong chemical scent. But does that mean they truly work? Let’s find out.

Do Moth Balls Keep Mice Away? Here’s the Truth

The short answer is no, moth balls alone won’t provide effective mice control. This is because:

  • Weak Deterrence in Open Areas: The chemicals in mothballs aren’t potent enough to repel mice in non-enclosed spaces.
  • Persistent Pests: Mice are resourceful and will often ignore moth balls if there’s food, warmth, or shelter available nearby.
  • Health Risks: Since moth balls rely on toxic gases, they can pose health hazards to you, your family, and pets if used improperly or excessively. If you’re exposed for too long, they can cause nausea, respiratory issues, and even liver damage in humans and pets.
  • Legal Restrictions: Misusing mothballs as pest repellents goes against pesticide laws. They are designed exclusively for enclosed spaces against moths, and improper use may lead to fines or legal issues.
  • Environmental Concerns:Outdoors, mothball chemicals can contaminate soil and water. This presents ecological risks to your local environment around San Jose and the Bay Area.

While moth balls may deter mice for a short time in very specific situations, they are far from a practical or safe solution for your home.

Effective Alternatives for Mice Control

Instead of relying on moth balls to keep mice away, here are some proven methods for addressing a mouse problem:

Seal Entry Points 

Inspect your home for tiny holes and cracks. Mice can squeeze through gaps as small as a dime, so use caulk and steel wool to block them.

Use Traps

Traps offer an effective way to get rid of small mice infestations. Snap traps are a tried-and-true method. Sticky or glue traps can also help but should be used carefully to avoid harming household pets.

Maintain a Clean Space

Store food in airtight containers, and regularly clean up crumbs and spills.

Ultrasonic Devices

Electronic repellents emit high-frequency sounds that can discourage mice from taking up residence.

Professional Pest Control Services

If you’re in San Jose, the San Francisco Bay, or East Bay areas, Banner Pest Services offers tailored solutions to keep your home mouse-free.

Solving Your Mice Problems in San Jose

So, do moth balls keep mice away? In short, they can, but there are far better (and safer) approaches to getting rid of rodents.

Rather than putting your faith in questionable fixes like moth balls, a targeted approach from experts can help you achieve long-term results. 

At Banner Pest Services, we specialize in safe and effective pest control measures tailored to homes in the San Francisco Bay and East Bay areas. We offer customized pest control plans for any property and rely on safe, family-friendly products to protect your home, children, and pets. 

For reliable pest control in San Jose, CA, contact Banner Pest Services today. 

Did You Know?

Moth balls containing newer active ingredients like paradichlorobenzene are considered safer than the older variety made with naphthalene, which is highly toxic. However, even one mothball can be dangerous if it’s eaten or even inhaled for extended periods. Symptoms of exposure include nausea, vomiting, and headaches. 

FAQ

Do moth balls repel mice effectively?

No, moth balls are not a reliable way to keep mice away. They are designed for use against moths, and their effectiveness as a mouse deterrent is both limited and potentially dangerous.

Are mothballs safe to use in non-enclosed spaces?

No. Moth balls release toxic gases, which can pose health risks in open spaces where humans and pets can inhale the fumes.

What is the best way to get rid of mice in the San Jose area?

Sealing entry points, maintaining cleanliness, setting traps, and working with pest control professionals like those at Banner Pest Services are the most effective ways to eliminate mice from your home.

How can I avoid mouse problems in my home?

Preventive measures like sealing cracks, storing food properly, and keeping your home free of clutter are key steps. Professional inspections can also help identify hidden risks.

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