STEM Bug Zapper Outdoor Bug Killer
$19.99 was $21.99
New lower price save $2.00 (9% reduction)
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Highly rated
$18.39
Buy 1, get 1 30% off select insect & pest control items
4.6 out of 5 stars with 4544 ratings
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$3.99
Buy 1, get 1 30% off select insect & pest control items
4.6 out of 5 stars with 148 ratings
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4.6 out of 5 stars with 1025 ratings
Guests are saying
The insect zapper is a compact and portable solution for keeping pesky bugs at bay, making it ideal for both indoor and outdoor use. Guests appreciate its rechargeable battery, which lasts up to 12 hours, and its quiet operation, making it safe for use around children and pets. While it effectively attracts and zaps smaller insects, some guests noted limitations in its effectiveness against larger pests. Overall, it offers a convenient and eco-friendly way to enjoy outdoor spaces without the annoyance of insects.
Summary created by AI from text of reviews reflecting recent feedback provided across different star ratings (includes incentivized reviews)
4.1 out of 5 stars with 558 reviews
24% would recommend
66 recommendations
1 out of 5 stars
Thumbs down graphic, would not recommend
21 January, 2026Verified purchase
STEM Failure For Me
I tried the STEM Bug Zapper Outdoor Bug Killer and it didn't work for me. I killed more flies with a fly swatter. Not impressed at all. $20 bucks for this? Don't waste your money.
1 out of 5 stars
Thumbs down graphic, would not recommend
23 November, 2025Verified purchase
boooo
did not work. and doesn't stay charged long enough
1 reply from stem Team team - 2 months ago
Thanks for getting in touch with us, Mark. We're sorry to hear this. We expect the STEM Flying Insects Zapper to attract and zap pests just about anywhere they could be pestering around your home for up to 12 hours. We want to provide you with quality products you can trust and would like to talk further to see how we can 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: 23009941. We'd love to help you fight bugs with accuracy! – Mindi, STEM Consumer Care
4 out of 5 stars
18 November, 2025
Saving my sanity one fly at a time!
We for some reason have a massive issue with fruit/drain flies(old apartment, gross pipes, you get the idea). This little device has been awesome thus far and it’s been less than 24hrs, I’ve already had to take it outside and clean it once because it was so full already! While the brush provided is helpful cleaning it can be tedious. It also does not seem as powerful as I had hoped so it may take once or twice more of the flies going back before it actually gets them but it seems to draw them back no issue. It does also seem to emit a small noise(think electric lighters) it’s not nearly as bad as I was afraid of, and very mellow light as well. Not blinding so you can keep it near you and sleep okay but that also means it’s not as powerful during daylight. The only reason I removed a star is because it does seem like the battery life isn’t as long as I’d hoped and it doesn’t work as well during the day but other than that, love it!
5 out of 5 stars
11 November, 2025
originally posted on influenster.com
Great for hosting!
[This review was collected as part of a promotion.] This mini machine is lightweight and easy to assemble. I tested out during tailgate season and it works very well. I was a bit concerned about cleaning it, but so far I have been able to just wipe and knock it in the side of the trash can and that works for me. It’s simple to charge. It works inside as well. Especially if you keep fresh fruit out year around.
5 out of 5 stars
Thumbs up graphic, would recommend
8 November, 2025Verified purchase
Really works!
Excellent, great price and really works!
5 out of 5 stars
Thumbs up graphic, would recommend
5 November, 2025Verified purchase
It works!
I love it. I keep it by my fruit bowl and it kills so many gnats as well as fruit flies and the occasional mosquito
1 out of 5 stars
Thumbs down graphic, would not recommend
2 November, 2025Verified purchase
doesn't work at all
we have it in front of a window where bugs always get in and it hasn't zapped a single bug. Zevo works 100x better
1 reply from stem Team team - 3 months ago
Thanks for reaching out. We're sorry to hear this was your experience. The STEM Flying Insects Zapper is designed to attract and zap flying insects in and outside your home. We value your feedback, as your satisfaction means the most to us. We’d appreciate the opportunity to 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: 22993285. We look forward to your call! – Mindi, STEM Consumer Care
2 out of 5 stars
Thumbs down graphic, would not recommend
28 October, 2025Verified purchase
Too Small to be effective.
Too small to be effective. Not worth the money. There are bigger and better ones out there.
1 reply from stem Team team - 3 months ago
We're sorry to hear about your disappointment with STEM Flying Insects Zapper. When placed near high insect activity, we expect this to quickly eliminate those pesky flying bugs. If you haven't already, be sure to keep the grid clean with the brush provided with the product. As this didn't meet expectations, we'd like the chance to discuss this further. Please give us a call at 877-869-7546 (weekdays, 8 a.m. – 5 p.m. CT) and mention reference number: 22989417. We look forward to helping you get back to bug-free living! – Megan, STEM Consumer Care
1 out of 5 stars
Thumbs down graphic, would not recommend
11 October, 2025Verified purchase
One time wonder.
It’s small and cheap, but I used it once and it stopped working. I cleaned it, charged it, it was dead.
1 reply from stem Team team - 4 months ago
Thanks for sharing your experience and we're sorry to hear this. We would expect the STEM Flying Insects Zapper to attract and zap flying insects for up to 12 hours and can be recharged after each use. We value your feedback and want to provide you with nothing but the best products. We’d appreciate the opportunity to learn a little more about this and see how we can help. Please give our experts a call at 877-869-7546 (weekdays between 8 a.m. and 5 p.m. CT) and provide your reference number: 22976815. We hope to chat with you soon! – Mindi, STEM Consumer Care
1 out of 5 stars
Thumbs down graphic, would not recommend
11 October, 2025Verified purchase
Waste of money! Do not buy this!
Waste of money! This bug zapper is useless. I have a variety bu zappers that are different brands and sizes. This one is a total waste of money. It is very small but the main problem is that it doesn't work. Avoid this product!
1 reply from stem Team team - 4 months ago
We appreciate hearing your thoughts, Ann. We're sorry to learn of your experience. The STEM Flying Insects Zapper is designed to attract and zap pesky insects in and outside your home. We’d appreciate the opportunity to make this right, as your satisfaction means the most to us. Please give our experts a call at 877-869-7546 (weekdays between 8 a.m. and 5 p.m. CT) and provide reference number: 22976809. We look forward to your call! – Mindi, STEM Consumer Care
1 out of 5 stars
Thumbs down graphic, would not recommend
2 October, 2025Verified purchase
DO NOT BUY - Doesn't work and you can't return it
Defintely do not recommend buying this. It doesn't work and you can't return it. It never once attracted or zapped a mosquito. It was the only light on in the room overnight with several mosquitos in the room and did not catch any of them. Also used outside with mosquitos swarming and again nada. Don't waste you money. Buying would defniretly be a waste because you can't even return it for some unknown reason exept that's the "policy" on certain items, including this one. Except nothing ever told me that was the policy before I bought it.
1 reply from stem Team team - 4 months ago
We're sorry to hear about your experience with STEM, Melanie. When placed near areas with high insect activity and a clean grid, the device is designed to quickly capture unwanted pests. Since that doesn’t seem to be happening, we’d really appreciate the opportunity to learn more and help. Feel free to give us a call at 877-869-7546 (weekdays, 8 a.m. – 5 p.m. CT) and mention reference number 22969007. We look forward to helping you get back to a bug-free space! – Megan, STEM Consumer Care
1 out of 5 stars
Thumbs down graphic, would not recommend
30 September, 2025Verified purchase
Does not work.
Does not work, bought it tried it even waved it around mosquitoes and it did nothing.
1 reply from stem Team team - 4 months ago
We're sorry to hear that STEM hasn't kept your home completely bug-free. When used with a clean grid and placed in areas with high insect activity, it’s designed to quickly trap those unwanted pests. Since that doesn't seem to be happening, we'd really appreciate the opportunity to learn more and help make it right. Please give us a call at 877-869-7546 (weekdays, 8 a.m. – 5 p.m. CT) and mention reference number: 22968079. We look forward to speaking with you. – Megan, STEM Consumer Care
1 out of 5 stars
Thumbs down graphic, would not recommend
12 September, 2025Verified purchase
Waste of money (even with the 50% off coupon!)
It does nothing… we use it in a darker space to attract mosquitoes, and we are still covered in bug bites. Finally just got clean-feel bug spray since it was incredibly ineffective
1 out of 5 stars
Thumbs down graphic, would not recommend
23 August, 2025Verified purchase
Does not work
This thing does not attach bugs. I’ve had it out for several days and the flys literally land on top of it. Definitely not worth the money
1 reply from stem Team team - 5 months ago
Thanks for sharing this, Kristen! We're sorry to hear this was your experience. The STEM Flying Insects Zapper is designed to attract and zap flying insects in and outside your home. We value your feedback and would like the chance to make this right, as your satisfaction means the most to us. Please give our experts a call at 877-869-7546 (weekdays between 8 a.m. and 5 p.m. CT) and provide reference number: 22934634. We'd love to help you find a science-backed way to keep bugs at bay! – Mindi, STEM Consumer Care
3 out of 5 stars
Thumbs down graphic, would not recommend
18 August, 2025Verified purchase
Buy on Sale only.
It was able to catch some fruit flies but I don’t think it’s powerful enough to attract much else. For the full price I don’t believe it’s worth it. I was able to get it cheaper with a rebate I found on Ibotta. I’ll keep it inside our rv trailer.
3 out of 5 stars
18 August, 2025
originally posted on influenster.com
Portable
[This review was collected as part of a promotion.] The noise level in portability is great. Safety is great because it’s covered and has a hook to hang it. The effectiveness is unsure since the rechargeable device isn’t long. So it’s more of like a charge it when you go outside to use it you’d bring it with you and then not sure the length of time it lasts before it dies.
4 out of 5 stars
11 August, 2025
originally posted on influenster.com
Great
[This review was collected as part of a promotion.] I love this because it is very safe to be around kids. Is very easy to carry around and plug in. It's not have a bunch of noise. And it's very effective. And I love the fact that you can put it outside or inside.
4 out of 5 stars
Thumbs up graphic, would recommend
6 August, 2025Verified purchase
Decent bug light
I keep it on at night in the bathroom due to seeing some small gnats flying around occasionally. Over the course of 2 weeks, there are several dead bugs in the grid. Recharge it during the day. Lasts all night. Better than nothing, but not as powerful as a larger bug light. Works OK in a small space. It is only about 7 inches tall.
1 out of 5 stars
Thumbs down graphic, would not recommend
4 August, 2025Verified purchase
Trash!!
Complete waste. Doesn’t do anything.
1 reply from stem Team team - 6 months ago
We're sorry to hear that you were disappointed with STEM. This product is designed to quickly capture bugs when placed in areas with high insect activity. Since your experience didn’t meet our standards, we’d appreciate the opportunity to learn more. Please give us a call at 877-869-7546 (weekdays, 8 a.m. – 5 p.m. CT) and mention reference number 22916544. We look forward to speaking with you. – Megan, STEM Consumer Care
1 out of 5 stars
Thumbs down graphic, would not recommend
2 August, 2025Verified purchase
Worthless
I have two flies. I’ve had two of these products on and I still have 2 flies after about 24 hours. Don’t waste your money
1 reply from stem Team team - 6 months ago
Oh no – we're sorry to hear STEM missed the mark! This science-backed product is made to quickly capture bugs as long as the grid is clean, so we really appreciate you letting us know it didn’t work as expected. We'd love the chance to chat and help make it right. Just give us a call at 877-869-7546 (weekdays, 8 a.m. – 5 p.m. CT) and mention reference number: 22915653. Hope to hear from you soon! – Megan, STEM Consumer Care