Exclusion Services for Pests in Utah

A scientific approach to pest control includes identifying pest entry points and sealing up those areas so pests cannot gain entry. This process is called exclusion.

Scientific approach to pest control

Keep pests out of your home or business.

Exclusion services can help prevent pests from entering your building.

Keep Pests Out

What Is Exclusion?

Pest professional in a hard hat looking under a food kitchen cabinet with a flashlight.

Exclusion is often overlooked but it is critical for successful long term pest prevention.

It is one of the key foundational principles of pest management. We should make structures as difficult as possible to enter instead of simply trying to control the pests once they enter. This can be done in a variety of ways from proper door sweeps, to sealants, stainless steel mesh, escutcheon plates, and various other materials and methods. 

Rodent entry point needing excluder to control rodents


Gaps, holes, and cracks all can be an easy entrance for pests to enter the building.

Thorn professional using steel wool for exclusion on the outside of a building


Filling these holes with excluder and installing door sweeps, pests will not be able to get inside anymore.

Thorn professional using steel wool for exclusion on the outside of a building

Exclusion Professionals

Thorn professionals use the best techniques and top of the line products to keep pests out.

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Thorn’s Exclusion Process

Inspect, assess, discuss, install and follow-up.

Professional in a blue shirt on a ladder

Thorn’s exclusion process starts with a detailed inspection. After the inspection, we will assess and discuss the best exclusion methods and the best materials to use. Then, we will install these materials and devices. We will follow-up on the work done and continuously monitor to ensure the devices are working properly and that all possible entry points stay closed.

Thorn professional inspecting around a home

1. Detailed Inspection

First step to exclusion is a detailed inspection. We need to identify any potential entry points for rodents and other pests. Usual pest vulnerable areas like doors, windows, utility penetrations, and where the exterior walls meet eaves must be examined carefully.

Two Thorn professionals in blue shirts having conversation

2. Assess and Discuss

Once we have identified the potential pest entry points we need to assess and decide what options are best for exclusion. Each situation may require a little bit different approach and solution and thought needs to be put into what will be best for each. Good materials applied in the wrong situations will lead to poor results.

Thorn professional using steel wool for exclusion on the outside of a building

3. Install Products

After we decide what will be best, we proceed to exclude. This is generally done millimeter by millimeter to make sure all gaps are filled.

Pest professional inspecting for pests inside of a hotel

4. Follow-up and Monitor

Lastly, we follow-up to make sure what we did is working, installed properly, and holding up. Exclusion points should be monitored on a regular basis to make sure they are still keeping pests out as intended.

How small a gap can a rodent squeeze under?

House mice and Norway rats can squeeze under small gaps in doors.

  • Mice need a gap of 1/4 inch.
  • Rats need a gap of 1/2 inch.

Many people believe that rodents in their home must have entered a door left open, but in most cases they gain entrance through “closed doors” that have gaps. Regular inspections of doors should be made to make sure that they are well sealed. 

Are all door sweeps rodent proof?

No. Door sweeps that you buy at a hardware store are not rodent proof.

Rodent proof door sweeps are rubber encased steel mesh. These door sweeps are rigid and when installed correctly do not allow rodent entry. Mice and rats cannot chew threw the sweep and gain entry.

How much does pest exclusion cost?

Pricing for pest exclusion varies by the type of infestation. Pest proofing doors start at $125, and small exclusion jobs are even less expensive, priced as low as $10 when combined with other services. Exclusion to prevent pests from entering a home or building is usually the least expensive pest solution, so if you need help, contact us for pricing today.

What is exclusion in pest control?

Exclusion refers to the process of sealing up pest entry points. By blocking entry points and sealing cracks, pests are less likely to enter a home or building.

How much does preventative pest control cost?

Pricing for preventative pest control is highly variable and depends on what type of pest issues need to be controlled. Pest exclusion is often a starting point, and is almost always a cost effective solution. Exclusion gets the best results over any other treatment strategy, and it works over time unlike sprays and other deterrents that are topical and need to be reapplied.

What does rodent exclusion mean?

Rodent exclusion specifically refers to sealing up a structure so that rodents cannot enter. This is critical when trying to control rodents like mice and rats. Trapping is a solution for getting rodents that have already entered a space, but if you fail to block their entryways, you’ll trap them endlessly. 

Rodent activity begets rodent activity, because they often urinate when entering a structure which informs other rodents on safe entry points. Our team of experts are trained to identify and block entry points to mitigate an infestation, and can help prevent pests from returning.

How do you do a rodent exclusion?

Exclusion strategies start with a detailed assessment of pest entry points. Mice and rats can enter through some of the smallest gaps, even those measuring ¼-inch to ½-inch. The skilled and knowledgeable pest control specialists at Thorn understand the most effective methods for exclusion, and can make recommendations for the best materials to seal gaps so that your solutions are rodent proof, and won’t rust or degrade over time.

Client Testimonials

Thorn prides itself on being among the best commercial pest control providers in Utah.

Nate did an amazing job! He went above and beyond and we are so impressed with the quality of Thorn professionals!

Barbara and John L

Cyrus did an awesome job at my house. He was really thorough and answered all my questions!

Amy K

Bayron is amazing, thorough and very kind! We love him!

Kaylynn C

Garrett has been phenomenal and excellent! I am really happy with the diligence he has expressed while taking care of the cockroaches!

Stephen T

Mitchell was wonderful and very thorough!  You guys are great.  You are doing such a service for us.  I really, really appreciate it!

Pat B

I want to give kudos to Mitchell.  He is so genuinely kind and thorough.  We sure appreciate him!  He was very professional and in the bigger picture he was very kind when he was asked to do specific things.

Lynette B

I was very impressed with Paul.  He did an amazing job, and I wouldn’t have any qualms about having him back any time!

John F

Ryan was really great to work with.  He was really kind and patient.  I always have questions and he answered them all for me.  He was really polite and professional.

Jesse L

Bayron was polite and respectful and did a thorough job!

Jennifer P

Paul is a very, very nice man.  When we have questions, he explains everything to us very well.  I really appreciate that!


Pests can be difficult to control. Thorn can help.

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How Thorn Can Help

Pests can be difficult to control, but that’s what we are here for. We create a strategic plan to gain control of your problem and make sure we get results.

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Thorn's Approach

We take a scientific approach to pest control. We start with an inspection and assessment to help us identify the pest, locate where they are, and create a specific plan for your property. Every home and business is different and requires a unique strategy.

Keep those pests out for good.