Seeing shield-shaped bugs on windows or walls when the weather cools? You’re not alone. Many Tacoma, WA homes get visits each fall. Most are brown marmorated stink bugs, a fast-spreading household pest in the Pacific Northwest.
They don’t bite, but they smell and they linger. Stink bugs slip in through gaps and crevices around windows, crawl spaces, and siding to hide for the cold months. Inside, they group up and release a foul odor when disturbed or crushed.
If you see them near lights or smell a musty odor, this guide shows you how to spot, prevent, and remove stink bugs in Tacoma homes, as well as when to call PCI Pest Control.
Key Takeaways
- The brown marmorated stink bug is the most common species in Tacoma homes.
- They enter through gaps in screens, crawl spaces, and attics when they overwinter.
- Using soapy water and caulk helps with minor problems, but professionals provide lasting results.
- PCI Pest Control in Tacoma uses safe, family-friendly treatments for year-round stink bug control.
Understanding Stink Bugs In Tacoma Homes
In the Pacific Northwest, stink bugs have become a growing nuisance since they arrived from Asia. Washington State University researchers have tracked how brown marmorated stink bugs have adapted to local climates and food sources, especially around fruit trees and gardens.
Warmth and light pull them to your home. During warm weather, you may see them on sunny walls and near windows. When temperatures drop, they start to overwinter and slip indoors through small gaps. They also show up in nearby cities across Pierce and Thurston counties.
Identify them by a shield shape, striped antennae, and marbled brown color. Adults are about 0.5 to 0.75 inches long. Nymphs are smaller, reddish brown, and wingless.
Common Signs Of A Stink Bug Infestation
Spotting early stink bug signs in Tacoma, WA, helps you act before they spread.
1. Visible Bugs Around Windows and Lights
If you see brown, shield-shaped insects gathering around lamps or window screens, you likely have a stink bug problem. They’re attracted to light and warmth, especially during fall.
2. Odor In The House
A musty smell near frames, vents, or cracks is a strong sign. Stink bugs spray this scent when threatened or crushed.
3. Stains On Walls or Curtains
Crushed stink bugs leave brownish or yellow stains that are tough to clean. You may notice them on walls or fabrics near entryways.
4. Clusters in Crawl Spaces or Attics
When overwintering begins, stink bugs hide in crawl spaces, attics, or wall voids. If you notice stink bugs taking over your Tacoma attic or see several bugs in these areas at once, you may already have a stink bug infestation.
5. Shed Skins or Nymphs
Finding nymphs or molted shells around windows and floors is another red flag that they’ve been breeding inside.
Why Stink Bugs Invade Homes In Western Washington
Tacoma’s mild climate and fruit trees suit stink bugs. In summer, they feed on apples, pears, and garden plants. When it cools, they look for dry shelter and move into homes, including attics.
They don’t bite, but they can foul surfaces and leave a strong smell. Older siding, wood trim, and gaps around windows and vents make homes in Western Washington vulnerable to damage.
Their goal is to overwinter. They lie low until spring, then many emerge at once.
How To Prevent A Stink Bug Problem
Use these simple steps to keep stink bugs out of your Tacoma home.
Seal Entry Points
Inspect for cracks, gaps, and openings around doors, window screens, and crawl spaces. Use caulk and weather stripping to seal them.
Install Proper Screens And Door Sweeps
Repair torn screens and add door sweeps to stop bugs from crawling underneath.
Use Natural Deterrents
Wipe down entry areas with vinegar or citrus-based cleaners. Natural predators, such as spiders and wasps, can help reduce stink bug numbers outdoors.
Try Soapy Water Traps
Fill a pan with soapy water and place it under a light source. Stink bugs will fly toward the light, fall into the water, and drown, an easy DIY trick.
Reduce Outdoor Lighting
Light attracts stink bugs. Turn off unnecessary porch lights at night or switch to yellow “bug” bulbs.
These steps reduce your risk and help you eliminate stink bugs early. If you still see brown marmorated stink bugs indoors, consider calling a professional.
DIY Vs. Professional Stink Bug Control
| Approach | DIY Methods | Professional Pest Control Services |
|---|---|---|
| Effectiveness | Temporary relief; may not reach hidden overwintering areas | Long-term elimination and prevention |
| Safety | Relies on traps and household cleaners | Uses safe, family-friendly treatments |
| Scope | Works for small infestations | Handles full-home stink bug infestations |
| Inspection | Limited to what you can see | Includes attic, crawl space, and wall void inspections |
| Follow-Up | No guarantee | We offer free follow-ups and re-treats under service plans |
How PCI Pest Control Handles Stink Bug Infestations
When you contact PCI Pest Control, our licensed exterminators in Tacoma follow a careful, proven process.
1. Inspection
We start with a detailed inspection of your property, checking for entry points and hidden areas where stink bugs may overwinter.
2. Identification
Our technicians confirm the stink bug species, usually the brown marmorated stink bug, to determine the most effective approach.
3. Treatment
We apply targeted, safe solutions that focus on cracks, window frames, and interior voids. These treatments are family- and pet-friendly, designed for long-term stink bug control.
4. Exclusion Work
We use professional-grade sealants to seal gaps and entry points, preventing re-entry. This exclusion step is crucial for keeping bugs out year after year.
5. Follow-Up And Maintenance
All pest control services in Tacoma, WA, include a satisfaction guarantee. If stink bugs reappear, we will re-treat at no extra cost through our All Seasons Protection Plan.
Why Tacoma Homeowners Trust PCI Exterminators
As a locally owned and operated company, PCI Pest Control has helped Tacoma residents protect their homes since 1998. Our WSDA-licensed exterminators know how pests behave in the Pacific Northwest, from ants and wasps to stink bugs and bed bugs.
We offer reliable pest management that fits your budget and schedule, with no hidden fees and transparent pricing, backed by careful work.
Making The Right Stink Bug Control Choice For Your Tacoma Home
Stink bugs are more of a nuisance than a danger, but they can make living spaces unpleasant when they move inside. Quick action keeps minor problems from turning into full infestations.
PCI Pest Control offers dependable stink bug control service in Tacoma, WA, with safe, proven treatments and long-term prevention options that keep pests out for good.
Want a home free from unwanted bugs? Contact us today or request a free quote for fast, friendly help.
FAQs
What Attracts Stink Bugs To Homes In Tacoma?
Warmth, light, and nearby fruit or gardens attract them. In the fall, they move indoors through small gaps to stay warm while they hibernate over winter.
Are Stink Bugs Harmful To People Or Pets?
No. Stink bugs don’t bite or sting, but they can cause allergies or odor issues if crushed. Their smell can linger on skin or fabrics.
When Should I Call Pest Control For A Stink Bug Infestation?
If you see large numbers of stink bugs or smell their odor indoors, contact PCI Pest Control. Our exterminators will inspect and treat your home safely and effectively.
to walk you through your pest control plan.
