How to Stop Bugs from Entering Through Windows

When the weather warms up in the spring, there’s nothing better than cracking open the windows and letting that fresh breeze roll in. But while you're enjoying the fresh air, pests see an open invitation to come inside.

Even closed windows aren’t always a match for determined bugs looking for a way in. And while it might be tempting to just grab a flyswatter or a can of spray, there’s a smarter (and easier) way to keep them out for good.

What Attracts Bugs to Windows?

Ever notice bugs hanging out around your windows and wonder why they’re so drawn to them? You're not alone—and there are a few reasons why windows become bug hotspots.

One big reason is light. When it’s dark outside and your lights are on inside, bugs that are active at night naturally gravitate toward the glow. To them, it’s like a bright “open” sign.

Temperature plays a role, too. A lot of bugs love the warmth. So if it’s cooler outside, they might cozy up to your windows, especially if warm air is seeping out. On the flip side, when it gets really hot outside, they may head toward your windows, hoping to catch a break and sneak into cooler air.

Then there are the social bugs—like ants. These tiny explorers leave scent trails for their colony pals. If one ant finds a way in through a window and stumbles on a crumb or two, you can bet others will follow the trail straight to the source.

Some bugs, like stink bugs and lady beetles, take it a step further. In spring and fall, they gather on the sunny sides of homes, just soaking up the warmth. Once they’re hanging around, it doesn’t take much for them to find a window crack and make their way inside.

How to Stop Bugs from Coming Through the Window

Knowing how to stop bugs from getting inside through your windows may seem obvious- just keep your windows closed. However, it’s not as simple as it sounds. 

First of all, if your window has any structural gaps, it won’t matter if it’s open or closed; bugs will be able to get inside. If bugs are getting in through your windows, start by checking for gaps. Even small ones can let pests enter your home. If there are any, fixing those gaps will help stop the problem.

The next thing to do is to install screens if you don’t have them. This will allow you to open your windows and enjoy the fresh air without letting bugs inside.

If you already have screens and pests are still getting inside, you need to inspect your screens to look for any holes or tears. Even a tiny tear could allow small bugs to get into your house.

How to Seal Windows to Keep Out Bugs

If you’ve inspected your windows and discovered some gaps around them, you need to seal the gaps to stop pests from getting inside. To do this, use a silicone or weatherproof caulk to fill small gaps. This will not only help keep out bugs, but it will also make your windows more energy-efficient, saving you money on your heating and cooling bills.

Depending on the type of windows you have, you may also be able to install weatherstripping. Weatherstripping can be used on both double-hung and casement windows. It seals air leaks when the windows are closed.

What Can I Put on My Window Screen to Keep Bugs Out?

In order for window screens to be effective, they first have to be free of holes and tears. There are repair kits for window screens that are an inexpensive way to fix rips and tears.

You should also use screen mesh that has a tight weave. If the screen has larger holes, little bugs may be able to fit through the holes. While an 18x16 mesh will keep out mosquitoes, you may want to get a 20x20 mesh to keep out smaller bugs.

Ever heard the saying, "can't hurt, might help"? It's definitely not fool-proof, but you can also try spraying your screens with an essential oil for added protection. Many bugs hate the scents of citronella and peppermint. So, spraying these oils on your screens can help keep pests away from your windows.

How to Open Windows Without Bugs Getting In

You want to open your windows, but you don’t want bugs getting inside. How can you do it safely? As previously mentioned, first make sure that your window screens are in good condition. This is the best way to keep pests out when you open your windows.

For added protection, you can use a window fan. Place it so it’s blowing outward. This will push the air, and any lingering bugs out and away from your house. If your windows are open at night, keep your lights off. 

How Do I Stop Bugs from Entering My Room?

Unfortunately, bugs don’t just get inside through open windows. If you want to keep your living spaces pest-free, you have to stop bugs from getting inside altogether. The following suggestions can help you keep your room- and your whole house- pest-free.

• Install door sweeps

• Seal baseboards and wall outlets

• Don’t leave standing water in trays or houseplants

• Seal gaps, cracks, and other openings around your foundation and siding

• Cut back foliage around the perimeter of your house

• Keep your kitchen clean 

• Reduce moisture and humidity throughout your house and property

• Consider a professional inspection

• Pick a pest control plan for year-round protection. Options include All-American’s Complete Care or Perimeter Plus

Call All-American to Keep Bugs Outside

If pests are getting inside through your windows, or by any other means, it’s time to call All-American. We’ll help you rid your house of pests and make sure they don’t come back. For over 60 years in Middle Tennessee, we don’t just apply pest control and walk away. We’ll provide the service you need. We’ll also give you tips to protect your home for years.

Contact us to request your free home evaluation today

Reliable Pest Control in Nashville, TN & Nearby Neighborhoods

Since 1961, All-American Pest Control has been your go-to team of trusted pest experts for  homes, businesses, and home builders throughout Nashville and Middle Tennessee. Our expert team offers termite treatments, mosquito reduction, rodent removal, ant and spider control, and wasp nest removal—keeping your property protected year-round. As a local, family-owned company, we take pride in offering reliable, professional pest solutions with outstanding customer service.

We proudly serve: Cane Ridge Farms, Crieve Hall, Forest Hills, Green Hills, Hillwood, Lenox Village, Old Natchez, Sylvan Park, West Meade, White Bridge, Antioch, Donelson, Donelson Hills, Hermitage, Inglewood, Lockeland Springs, Maplecrest, Maplewood Heights, Nashboro Village, Neely's Bend, Priest Lake Park, Stewarts Ferry, and the entire Davidson County and Greater Nashville areas.

For trusted pest control in Nashville, TN, and these surrounding communities, contact All American Pest Control today! Call (615) 824-8814 or contact us today for more information.