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Mom Bought An Alarm To Catch Who Keeps Leaving The Baby Gate Open, And It Worked Instantly

by Annie Nguyen
January 14, 2026
in Social Issues

Living with teenagers and a partner means learning to pick your battles, especially when the same small problem keeps happening over and over again. OP thought installing baby gates would be enough to keep the house running smoothly and the dog out of trouble. Turns out, remembering to actually close them was a whole different challenge.

After countless reminders and cleanup duties that clearly did not change anyone’s behavior, OP decided to get creative. Instead of arguing or nagging, they turned to a surprisingly simple piece of technology that shifted the problem from quiet forgetfulness to loud accountability.

What started as a practical fix quickly turned into an unexpectedly funny experiment in household behavior. The reactions from both the teenager and the husband made the whole situation even better. Scroll down to see how one small purchase changed the dynamic overnight.

One mom finally stopped reminding and let an alarm do the talking

Mom Bought An Alarm To Catch Who Keeps Leaving The Baby Gate Open, And It Worked Instantly
Not the actual photo

Bought an alarm to go off whenever someone leaves the baby gate open?

I’m cackling right now. My teenager and husband are constantly leaving the baby gates

I have installed on the stairs and door to the mudroom open.

The dog will then go into the mudroom and eat the cat litter, or she’ll pee on the carpeted landing

or go up to our room to get into our trash or the diaper pail. It drives me bananas.

Making them clean it up doesn’t seem to deter them from constantly forgetting to shut the gates.

My teenager maintains that they don’t leave the gate open.

So I bought one of those window alarms that has a separate magnet and then the main unit,

so when you separate them, it alarms that the window is open.

You can put these things just about anywhere, such as doors, fridge or freezer, cabinets, etc.

You can also set a delay, which is what I did so it isn’t alarming just from someone walking through.

Currently upstairs with the toddler for a nap and heard the teenager go down the stairs.

Aaaaand 30 seconds later the alarm starts going off.

I sent them laughing face emojis and they just said “die” (I responded with a kissy face

and offered to turn it up louder if they’d like me to!) but I’m sitting here trying not to wake the baby up from laughing.

I didn’t tell my husband I bought these alarms so I can’t wait for him to come home and find out about them too… 😂

EDIT: for those saying the timer should be shorter, I agree, I just don’t have another option.

There are 3 settings: 0s delay and the alarm plays every 5s.

30s delay and the alarm plays every 20s.

Or 0s delay and the alarm plays continuously.

Other alarms I was looking at had similar options, this is just the one that was cost effective,

came in a 2-pack, and could get here within a day.

Husband is home but hasn’t gone upstairs or through the mudroom yet.

He usually skips the mudroom and comes inside through the sliding doors.

It’s almost toddler bathtime so I’m sure it’ll happen soon.

UPDATE: Husband did indeed leave the gate open.

He made it back over to the stove where he had the loud fans on so he didn’t immediately hear the alarm.

Everyone else heard it and I said “who left the gate open?” My middle child IMMEDIATELY gave up my husband

and said “he did it!” My husband said “it wasn’t me” and she fired back at him

that he just came down the stairs and it definitely was him.

Then the alarm went off again and he said “what is that?” And then “really, babe?”

before rolling his eyes and marching over to fix the gate.

Everyone got a pretty good laugh about it.

I’ll have to give it a trial run and see how well it deters them from leaving it open in the future!

EDIT: I keep getting comments about training my dog, thanks for the concern, but she only pees in that one spot.

It’s a muscle memory thing, because we have scrubbed, steamed, painted, and replaced carpet

and underlayment and she will still squat there and only there, nowhere else in the house.

As for her getting into diapers and socks and underwear, we’ve worked with her vet

about the possibility of doing medications, but ultimately have been told it’s largely a dog thing.

Some dogs don’t care much for poop and other body odors and some can’t get enough of them.

(She will ONLY go for the poop diapers, so she seems to be driven

by the same urge she gets when she goes after the cat litter).

We’ve been told we can put her on essentially doggy Prozac, or we can just keep those things out of her reach.

I don’t want to put her on meds if we can help it so this is our solution right now.

If it proves ineffective in the future or she starts getting into other stuff,

we will revisit the behavioral stuff with the vet. Also keep getting told to get a spring loaded gate.

They are spring loaded. The issue is that all of these auto close gates also have a feature

where being pushed open to 90 degrees causes it to stay open and disable the auto close

until it gets nudged enough to come out of the open setting..

FINAL UPDATE: I worked nights all weekend and slept during most of the day Sat/Sun.

Throughout that time I heard the gate alarms go off frequently.

The teenager stayed in their room most of the time so it was definitely my husband setting it off the majority of the time.

I haven’t rubbed it in his face (yet).

He knows that I know that he’s aware he’s the problem.

To his credit, he hasn’t complained about it (at least not to my face,

though I did hear him say “oh god dammit” once before going back to shut a gate) and neither he

nor the teenager have decided to just flip the off switch on the side, so at least they’re going along with it.

The teenager is much more vocal about their h__red of the alarm, said it’s a very overstimulating sound,

to which I said “then I guess you’d better shut the gate, eh?”

They’re proving to be much more trainable than my husband, but hopefully

with a few more weeks of Pavlov’ing him, he’ll just do it automatically.

Thanks for all the comments, I got a lot of chuckles out of them!

At the center of many household conflicts is a quiet emotional truth: people don’t argue over objects; they argue over responsibility. When small, repeatable actions are ignored, the frustration often falls on the person who ends up managing the consequences.

In this story, OP’s irritation wasn’t really about baby gates. It was about feeling unheard, overburdened, and left to clean up problems that could easily have been prevented.

On the other side, her husband and teenager likely didn’t intend harm, but experienced the reminders as background noise rather than an urgent necessity.

Psychologically, OP’s decision to install alarms reflects a shift from emotional exhaustion to strategic problem-solving. After repeated reminders and consequences failed to change her behavior, her frustration reached a tipping point.

This is a common emotional trigger: when verbal communication no longer works, people seek structural solutions. Rather than continuing arguments that led nowhere, OP altered the environment itself. This wasn’t revenge driven by anger, but an attempt to restore balance and reduce mental load.

From a behavioral standpoint, this kind of response is especially effective. OP didn’t shame or lecture. She introduced immediate, unavoidable feedback. The humor in her reaction suggests she wasn’t trying to dominate or punish, but to make the issue impossible to ignore.

That distinction matters. The satisfaction readers feel comes from seeing a fair outcome achieved without escalation. The alarms removed plausible deniability, turning a recurring conflict into a shared joke with a clear lesson.

According to Simply Psychology, classical conditioning explains how habits form when behaviors become associated with specific consequences. Their overview of classical conditioning notes that when a neutral action is repeatedly paired with an unpleasant stimulus, people naturally learn to avoid triggering it over time.

Applied here, the gate alarm becomes the stimulus. Leaving the gate open, once neutral, is now linked to an irritating sound. Over time, the brain adjusts, and closing the gate becomes automatic.

OP’s approach wasn’t passive-aggressive; it was behaviorally informed. Instead of relying on memory or motivation, she designed a system that supported the outcome she needed.

Importantly, the story ends not with resentment, but with reluctant acceptance. The teenager adapts quickly. The husband grumbles, but complies. That outcome reinforces why this feels like justice rather than cruelty. No one was embarrassed publicly, no one was yelled at, and the problem began resolving itself.

In the end, this story raises a thoughtful question: when repeated reminders fail, is changing the environment more compassionate than repeating the argument?

Perhaps the lesson isn’t about petty revenge at all, but about recognizing when systems work better than words, and when laughter succeeds where frustration never could.

Here’s the comments of Reddit users:

These commenters shared similar alarm-related “caught in the act” stories

404UserNktFound − Outstanding! My husband always denied leaving the freezer open

(because of not pushing the door quite hard enough to close completely).

We remodeled the kitchen recently and the new fridge has an alarm on the door.

I get to laugh at him every time it starts beeping at him.

huebnera214 − We have door alarms at work (dementia unit) that go off after so long if the door is held open,

or if the door bounces so the magnet connection ends/gets pushed on without the code.

The doors have been bouncing for months.

It’s mildly entertaining to watch my coworkers have to go back and fix it multiple times a day.

Theres a trick to closing it gently but most just charge through and whatever happens happens.

This group celebrated playful, harmless pettiness as effective communication

Ok-Try-857 − I love this! Early in my relationship I got sick of arguing or reminding my partner

about certain things so I resorted to 2 calm talks

and then told them they should expect a prank next and forevermore.

I’m not discussing it again. For example, they kept leaving dollops of toothpaste on the counter.

Beard hairs would stick to it. I would get it on my clothes when washing my hands.

He’d put a clean hand towel on it and I would dry my hands with it resulting in toothpaste on my hands.

You get the idea. I started wiping it up with a qtip and the smearing it on the back of the faucet handles

so every time he used the faucet he got toothpaste on his hands. Worked like a charm.

Emmyisme − This is the kinda petty s__t I sub here for.

No one gets hurt, but your point gets made and once they get used to it,

it'll easily become a story to cackle about for years to come.

They debated alarm timing and how fast consequences should kick in

hefty_load_o_shite − Piece of advice, 30 secs is too long.

It's time enough to get downstairs and into the kitchen in your house in particular.

Maybe they go downstairs, get there, hear the alarm, and opt

to make their sammich before going back upstairs to turn it off. 5 secs is the ideal time

Sceptically − I'd recommend a shorter delay, because it sounds like that one is just long enough for someone

to leave it open and get out of earshot if they're rushing.

These Redditors discussed responsibility versus training, humans included

Aggressive_Cloud2002 − I don't know if this is so much petty revenge, to me it seems more like "my husband

and teenage son are so inconsiderate and inattentive that I have to resort to drastic measures

to ensure they do one small thing that makes it so our dog doesn't get in danger or create a mess

that I will inevitably need to clean up", but it does seem like a good solution to that problem, so good for you, I guess!

gothiclg − Normally I’d say it’s time for a trainer for the dog but annoying your teen is more worth it.

Most readers agreed this wasn’t about revenge; it was about sanity. A small, clever tweak turned a daily frustration into a shared joke and, hopefully, a lasting habit change. The alarm didn’t punish anyone; it simply removed the excuse of “I forgot.”

So was this clever parenting, lighthearted petty revenge, or just good problem-solving? Would you try something like this at home, or has your family already learned the hard way? Drop your thoughts below!

Annie Nguyen

Annie Nguyen

Hi, I'm Annie Nguyen. I'm a freelance writer and editor for Daily Highlight with experience across lifestyle, wellness, and personal growth publications. Living in San Francisco gives me endless inspiration, from cozy coffee shop corners to weekend hikes along the coast. Thanks for reading!

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