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These 2 Cheap Gadgets Stop Burglars Cold and Keep You Safe at Home

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When it comes to the possibility of having my home broken into, I’m actually a little more worried about what would happen if I was there than if I wasn’t.

Front door with door jammer under handlePin

As traumatic as getting burgled is, the last thing I want is to find myself confronting a startled burglar who might be armed. To prevent home burglary, I use a combination of products, all inexpensive.

1. The Door Jammer

About 20 years ago, I bought a product called a door jammer to keep people out while I’m home. I’ve used it in apartments and houses, even when an electronic security system was present.

You just stick it under your front door knob, gently kick it into place, and it “jams” in there so there’s no way to open the front door from the outside.

When you want to open the door, it pulls back out very quickly and easily (important in case of a fire), and it’s adjustable so it fits every door knob I’ve ever tried it on.

It collapses down to about two feet in length, so you can even take it along when you travel and use it on hotel room doors for added security (or privacy).

Jammers cost between about $16-75, depending on the brand and where you buy it. This is one of my jammers, (I’ve bought a few over the years for additional doors) and it’s been perfect. I’ve had it for well over 10 years, and it works just as great as it did on day one.

Landlord Entering Without Notice?

One of my favorite things about the Door Jammer is that it keeps landlords and their contractors from entering your rental without notice. By law, they have to give you 24 hours notice or more, unless it’s an emergency, but many of them don’t know this. If you’ve got an intrusive landlord, the door jammer will keep them out when you’re home.

It’s also a good way to deal with exes and former roommates who still have keys and don’t respect boundaries. Although in that case you should also get your locks changed ASAP.

2. The Dowel Stick DIY Door Jammer

A wonderfully inexpensive way to make windows and sliding glass doors more of a challenge for intruders is to secure them with dowel sticks. Dowel sticks cost a couple of bucks, maximum – you can find them wherever hardware or gardening items are sold.

  • Close your sliding glass doors.
  • Drop a dowel stick into the empty track where the shut door would be if it was open. Now you can’t open the door without moving the dowel stick.

It’s that simple. People from the outside will have no luck at all trying to get in that way. Now, you may be thinking this doesn’t stop them from breaking the glass, and that’s true.

But burglars break minimal glass so they can get a hand inside and unlock the door. The dowel stick won’t let that work, either – the burglar would have to break enough glass to to step through into your home.

That’s a noisy, time-consuming task, and burglars want to be quick and quiet.

What about emergency services?

Would these devices keep emergency services from getting into your home to save your life? Well, most of us keep our front doors locked, and probably deadbolted, which also keeps them from entering easily.

If we aren’t physically able to let emergency services in, they would have to either take the door of its hinges or break it down. Yes, that takes time, but it’s something they know how to do, and do quickly.

I doubt the Door Jammer would prevent professionals who are determined to break a door in, but that’s

But if it would, they also carry axes and other equipment. Emergency services’ job is to get to you, and people who need rescuing are frequently hard to reach. They know what they’re doing.

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Last Updated:

August 14, 2025

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