STEM Ant & Roach Spray Fly Indoor Insect Killer - 12 fl oz
Highly rated
$7.69
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This bug spray has garnered positive feedback for its effectiveness in eliminating pests like ants, roaches, and flies while being safe for use around children and pets. Guests appreciate its plant-based ingredients and pleasant scents, such as lemongrass and mint, which set it apart from traditional chemical sprays. The packaging is user-friendly, and many guests find it a great value for the price, making it a reliable choice for pest control in various settings.
Summary created by AI from text of reviews reflecting recent feedback provided across different star ratings (includes incentivized reviews)
4.0 out of 5 stars with 308 reviews
effectiveness: 3.75 out of 5
quality: 3.62 out of 5
value: 3.58 out of 5
60% would recommend
94 recommendations
5 out of 5 stars
Thumbs up graphic, would recommend
12 December, 2025Verified purchase
stem bug repellent
works really well!! makes cockroaches run for cover. thank god!!!
5 out of 5 stars
Thumbs up graphic, would recommend
7 December, 2025Verified purchase
(no review title)
works 👍
1 out of 5 stars
31 October, 2025
(no review title)
This stem natural insect killer doesn't work very well as well as the spray can itself stop spraying after about half the can is missing. It's a waste of money.
1 reply from stem Team team - 4 months ago
Thanks for getting in touch with us. We're sorry to hear this. We expect STEM Ants Roaches & Flies to fight nature with nature, both indoors and out. We want to provide you with nothing but the best products and would love the chance to further help. Please give our experts a call at 877-869-7546 (weekdays between 8 a.m. and 5 p.m. CT) and provide reference number: 22993312. We hope to chat with you soon! – Mindi, STEM Consumer Care
5 out of 5 stars
Thumbs up graphic, would recommend
14 October, 2025Verified purchase
Worth every penny. Works great.
This works so well. It’s basically immediate. You don’t have to keep spraying. It has a strong odor that isn’t pleasant, but I don’t think it’s a deal breaker. This is safe enough to use with a pet nearby. I’ve bought this repeatedly due to the consistently impressive performance of this formula on a variety of bugs.
4 out of 5 stars
Thumbs up graphic, would recommend
12 October, 2025Verified purchase
Unexpectedly effective
I had doubts but it's effective right with the first spray and I don't mind the smell at all as it reminds me of rosemary and I also didn't have to wait until the aerosol to disperse for a while to return to my room. One thing I don't quite like is that it's sugary sticky so I have to wipe down the surfaces but I suppose that's the mechanism of the spray to be effective. It's quite small but for living in a small space I will definitely buy it again.
4 out of 5 stars
Thumbs up graphic, would recommend
8 September, 2025Verified purchase
works
works really well but the spray nozzle broke very quickly
5 out of 5 stars
Thumbs up graphic, would recommend
6 September, 2025
Amazing product !
I never write any reviews , but for this product I will. It has been amazing !!!! Obviously the odor can be strong but this product gets the job done. One hundred percent recommend this product !
5 out of 5 stars
Thumbs up graphic, would recommend
6 September, 2025Verified purchase
Instant Bug Killer
On a monthly basis, I purchase Stem Ant-Roach-Fly-Insect Killer Bug Spray to deal with the fruit fries in the kitchen, from spring to fall. With a spritz here and there, it does the job perfectly. I love how it's safe for people and pets, and made from natural ingredients like essential oils. It's also on my list to buy all the time.
1 out of 5 stars
Thumbs down graphic, would not recommend
2 September, 2025Verified purchase
Me
Too oily . It’s very messy
1 reply from stem Team team - 6 months ago
Thanks for reaching out! I'm sorry to hear of your experience. STEM Ants, Roaches & Flies Spray is designed to fight nature with nature. Being made with essential oils, this spray does have a stronger fragrance. Usually, the smell dissipates within a few hours; it may take longer if sprayed heavily. Be sure to ventilate the area and wipe surfaces with warm, soapy water to get rid of the smell quicker. If we can be of further assistance, give our experts a call at 877-869-7546 (weekdays between 8 a.m. and 5 p.m. CT) and provide reference number: 22942185. We hope to chat with you soon! – Mindi, STEM Consumer Care
5 out of 5 stars
Thumbs up graphic, would recommend
29 June, 2025Verified purchase
Insect Spray
This product really kills insects especially ants. It doesn’t have a foul odor after spraying. Price is ok.
4 out of 5 stars
Thumbs up graphic, would recommend
23 June, 2025Verified purchase
Stong essential oil odor and oily BUT WORKS!
At first, I liked that it works really well for something that is safe for use around pets and children, but then i read its safe AFTER it dries…but better than the other stuff I guess. I do not like the oily residue and strong odor it leaves behind either, it’s way too strong for me and it lingers for the rest of the day. HOWEVER, it does its job and does it well. It’s a safer solution that kills bugs just as well as the other stuff and I figure anything that kills bugs well is bound to have an odor to it. Decided I’d leave a review since all the ones I saw prior were done “as part of a promotion”
3 out of 5 stars
Thumbs down graphic, would not recommend
29 May, 2025
Not sure about this product
First time trying this for ants. Waiting to see if it works, but did not like the strong smell at all.
1 out of 5 stars
Thumbs down graphic, would not recommend
14 May, 2025
Bad smell that lingers for days and will make you nautious
We sprayed this onto our OUTDOOR patio. It got rid of the ants but now the INSIDE of our apartment has wreaked of this foul smell for several days, even are trying to dillute it with buckets of hot soapy water. I actually feel sick from inhaling this stuff all day. And the cats are subdued. Hopefully it's not harming them. It's hot and we can't open the windows because of the smell. So I would absolutely NOT RECOMMEND this product. Gross. I'd rather deal with the ants.
1 reply from stem Team team - 10 months ago
Thanks for sharing this with us, Matt. We’re sorry to learn of your experience. Know comments like yours are taken seriously and we’d like to chat with you. When you have a moment, give our STEM team a call weekdays from 8 a.m. to 5 p.m. CT at 877-869-7546 and provide this reference number: 22838675. We look forward to your call! – Mindi, STEM Consumer Care
4 out of 5 stars
Thumbs up graphic, would recommend
13 April, 2025Verified purchase
Effective
Okay this is effective but just a warning, it tends to leave floors/ furniture a bit greasy. Hard to clean up after. But if you’re looking for a less harsh alternative to something like Raid, this would be the product.
2 out of 5 stars
Thumbs down graphic, would not recommend
10 October, 2024
Works but at what cost
This works but it also has a horrible smell that will stick around for DAYS - plus it’s oily so the product (and scent) will soak into anything within the spray radius. Walls, wood, fabrics, whatever you’ve got. I sprayed this about four times in my bathroom to kill a bug and it took two days for the smell to fully go away, even after: - initially cleaning the spray residue - following up with scrubbing the affected areas with soap and hot water (twice) - washing all linens from the bathroom - cleaning the carpet outside of the bathroom - opening all doors and windows to air out the house - running every ceiling fan and standing fan I have. I wouldn’t care as much about the lingering smell if it wasn’t so strong and foul. It’s like burnt rubber and cough syrup. After all the fuss, I’d rather handle bugs the old-fashioned way!
1 reply from stem Team team - 1 year ago
Thanks for letting us know about this. I'm sorry to hear of your experience with STEM Ant, Roach & Fly Spray. Being made with essential oils, this spray does have a stronger fragrance. Usually, the smell dissipates within a few hours; it may take longer if sprayed heavily. I have passed this feedback along to my team, and we would appreciate the chance to help. So we can best assist you, give us a call weekdays from 8 a.m. to 5 p.m. CT at 877-869-7546 and provide this reference number: 22652764. We look forward to hearing from you! – Mindi, STEM Consumer Care
1 out of 5 stars
Thumbs down graphic, would not recommend
9 October, 2024Verified purchase
Its a no for me
Did not do the work I prefer zevo and this one is to oily
1 reply from stem Team team - 1 year ago
Thank you for letting us know. While this is made with essential oils, we'd expect any excess product to be wiped up easily with soapy water. We want to chat further and make this right. Reach our experts at 877-869-7546 on weekdays between 8 a.m. and 5 p.m. CT. Your reference number is 22649592. We hope to hear from you soon! – Brooklyn, STEM Consumer Care
1 out of 5 stars
Thumbs down graphic, would not recommend
16 August, 2024
Horrible Odor
The odor of the spray is too strong! I barely sprayed any and needed to open the windows immediately to air out our space. Bought it for its advertising of being safe around pets but I can’t imagine the smell is good for anyone.
1 reply from stem Team team - 2 years ago
Thank you for taking the time to make us aware of your experience with our STEM Ant, Roach, & Fly, Holly. We're terribly sorry to hear this and want you to know we take comments like yours seriously. We'd be happy to chat further. To do so, please give us a call at 877-869-7546 (weekdays, 8a.m. – 5p.m. CT) and mention reference number: 22585074. We look forward to your call. – Megan, STEM Consumer Care
1 out of 5 stars
Thumbs down graphic, would not recommend
13 August, 2024
Don't buy this
Smells horrible and makes me cough 😩 did not even kill roaches
1 reply from stem Team team - 2 years ago
We’re sorry to learn this was your experience, Katie. Know that comments like yours are taken seriously, and we’d like to chat with you. When you have a moment, give us a call weekdays at 877-869-7546 between 8 a.m. - 5 p.m. CT, and provide your reference number: 22568500. We hope to hear from you soon! – Mindi, STEM Consumer Care
5 out of 5 stars
Thumbs up graphic, would recommend
3 August, 2024
ZEVO Fan!
This product really works well & works like magic! I know this specific item says it works strictly for Ants, Roaches & Flies, but it also works on Fleas & this year has been extremely awful with the Fleas & spraying this throughout our bedrooms, bathroom, kitchen/dining room, living room & hallway… it’s worked extremely well that I’m going to use it in my car because these Fleas are now in my car!!! I definitely recommend this product & I will continue to use this product from here on out & mainly because we’ve got cats & it’s very safe!
5 out of 5 stars
Thumbs up graphic, would recommend
31 July, 2024Verified purchase
It works!
We've had a bit of a fly problem, and this stuff kills the flies on contact! It works so much better than expected, and has a nice herbal scent. Highly recommend!