Overwintering Pests Control

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Overwintering Pests Control

Most Effective Products

Supreme IT Insecticide
Suspended Concentrate
As low as $54.99
Pyrid Insecticide Aerosol
As low as $27.99
D-Fense Dust Insecticide
As low as $12.33
Keith's Pro Tips

"Do your best to prepare for overwintering pests in fall. The simplest way is to seal up entry ways and spray residual pesticides around your home or structure."

Overwintering Pests Control: How To Get Rid of Overwintering Pests

This page is a general Overwintering pests control guide. Using the products and methods suggested you will get control of Overwintering pests. Follow this guide and use the recommended products and we guarantee 100% control of Overwintering pests.

Overwintering pests are common in homes and businesses.

Overwintering pests come in many sizes and shapes, from Cluster Flies to Stink Bugs to Ladybugs to Boxelder Bugs there are many insect pests that enter inside homes and commercial buildings to find warmth during the winter.

Overwintering pests many times will be found on the outside of structures in early fall, but when the cold months arrive they relocate to the inside of homes by finding cracks and crevices on the foundation of the structure.

Just like all living things during the winter these pests must find shelter. While many times they can weather out the climate inside trees, rocks, and logs, our structures (buildings, houses) are very attractive and provide them with the shelter they need to survive the winter.

Overwintering pests are mainly nuisance pests that can invade in large numbers. These pests will often crawl out of their hiding spots during the beginning of spring or during a warm winter’s day and surprise homeowners with their sudden and unexpected appearance all over the house.


There are many types of Overwintering pests and their size, color, shape, and species can vary. A quick way to identify them is by their infesting locations.

how to get rid of overwintering pests identification

  • Most Overwintering pests will be found indoors. Inside your home or buildings, you will find ladybugs, boxelder bugs, stink bugs, and cluster flies. While ladybugs, boxelder bugs, stink bugs, while usually appear out of the woodwork in early spring, cluster flies (who look like house flies but aren't attracted to decaying materials) can come out in the middle of winter on a warm day and can appear in large numbers “clustering” (as their name states) around windows. 
  • Outdoors in the late fall, you might find ladybugs, boxelder bugs, and stink bugs taking in the sun on the West and South facing walls of your structure. Ladybugs are easy to identify, they are circular with black dots on their red body. Boxelder Bugs are black with orange and red edges around their bodies, most commonly found close to Boxelder trees. Stink Bugs, emit a foul odor when threatened or crushed and have a body that resembles a shield.

If you cannot determine your exact species of Overwintering pests you’re dealing with, then continue on with this guide, it will treat any outdoor or indoor Overwintering pest infestation.


Before beginning treatment, you need to know the areas where Overwintering pests are found or the cracks and crevices they might exploit to enter your structure. During the inspection portion of this guide, you will focus on finding these areas where Overinwintering places are harboring and the cracks and crevices they used to get inside.

inspection of your property overwintering pests

Where To Inspect

Outdoors look in overhanging vents, loose chimney flashing, openings in walls, missing or damaged grates, missing or worn door seals, damaged or worn window screens, openings in electrical/plumbing penetrations, cracks in the foundation, seals around vents, missing screening in vents, and any possible crack crevice or opening outside your home. Indoors take a look inside any crack or crevice inside the structure, where these insects will come out of.

What To Look For

You’re looking for gaps, openings, slits, and cracks and crevices. Inspect all the places inside and outside your home listed above. If you find any of these openings and cracks and crevices outside and inside your structure and any overwintering pests emerging from these places, this is where you will apply treatment.


Once you have confirmed Overwintering pests entry points and activity it is time to being treatment. Remember to read all product labels and follow the application instructions on these labels and stay safe by wearing personal protective equipment (PPE).

Step 1 - Outdoor Treatment

Begin treatment outdoors. You will use one product, Supreme IT. Supreme IT is labeled to treat more than 75 insect pests, and it both kills and repels insects. This product is perfect to drive away and kill any insect that might get close to your property. It also has residual control (or long-term effects) that will last up to 90 days.

treatment reclaim it perimeter structure

Supreme IT

Mix 1 ounce of Supreme IT with a gallon of water inside a pump sprayer. This application rate will cover 1,000 square feet. You will do a perimeter treatment. To do this, you will spray 3 feet up and 3 feet out from the foundation of your structure. Apply in this manner all over the foundation of your structure, while also targeting window frames, door frames, eaves, soffits, garage doors, rain gutters, electrical/plumbing penetrations, and any crack and crevice you found during your inspection.

Do not let people or pets enter areas treated until 2 to 4 hours have passed.

Step 2 - Indoor Treatment

Now you’re ready to apply treatment indoors. You will use two products, D-Fense Dust and Pyrid. D-Fense Dust is great insecticidal dust that will quickly disperse and reach deep into hard to reach areas like wall voids and cracks and crevices and has a residual of 8 months. Pyrid will be used as a contact spray to kill any stragglers you might see around the home. It can also be used and sprayed directly into cracks and crevices.

d-fense dust application treatment

D-Fense Dust

To use D-Fense Dust you will need a hand held duster. Fill the duster halfway with D-Fense Dust and leave lots of room for air to circulate inside. Simply squeeze the duster to apply. Apply under appliances, behind baseboards, under sinks, in wall voids, behind electrical outlets (remember to turn off the breakers before applying and taking off the plastic lids, and apply to the sides of the metal casing if you have one), and in the attic and any crack and crevice found inside the home.


Pyrid comes in a ready to use aerosol can. Simply point and spray. Apply directly to any overwintering pests you might find around the home.


Prevention is the final step for control. With overwintering pests, prevention is the best form of control. Start by addressing the small entry points, cracks and crevices, slits, and openings found on the outside of your structure. Use caulking, copper mesh, and our Black Out Pest Foam to seal and close off any cracks and crevices found on the outside of your structure. Fix or repair damaged screens or door seals.

prevention for overwintering pests

Add screening to vents. Trim back vegetation (including tree limbs that contact your roof) from your structure that insects might use to get close to your property. And finally, reapply Supreme IT every 3 months throughout the year, especially during the fall (or a month in advance before winter) to repel and kill any insects that might try to get inside.

Key Takeaways

  • When it comes to Overwintering pests, sealing of any entry points and cracks and crevices is half the battle. Remember to also fix and repair weather stripping and window and door seals.
  • Apply Supreme IT throughout the year as a perimeter barrier around your structure, especially during the fall when the weather starts getting colder.
  • And finally, and most importantly, remember to read all product labels and follow the application instructions on these labels, and stay safe by wearing personal protective equipment.
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