STEM Ant & Roach Spray Fly Indoor Insect Killer - 12 fl oz
$7.69
In Stock
Eligible for registries and wish lists
At a glance
About this item
Additional product information and recommendations
Discover more options
Highly rated
$7.49
Buy 1, get 1 30% off select insect & pest control items
4.5 out of 5 stars with 2133 ratings
Bestseller
$5.39
was $5.79 New lower price
Buy 1, get 1 30% off select insect & pest control items
4.4 out of 5 stars with 1012 ratings
Frequently bought together
Related Categories
Guests also viewed
Highly rated
$7.49
Buy 1, get 1 30% off select insect & pest control items
4.5 out of 5 stars with 2133 ratings
Bestseller
$5.39
was $5.79 New lower price
Buy 1, get 1 30% off select insect & pest control items
4.4 out of 5 stars with 1012 ratings
Guests are saying
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)
4.5 out of 5 stars with 2691 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 - 3 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.
2 out of 5 stars
26 September, 2025
originally posted on influenster.com
Strong scent
[This review was collected as part of a promotion.] I like that this is a natural product and it does seem to work. It only works on contact with bugs. Besides that, I think the product smells very very strong. It smells like essential oils but it is very strong. It is super oily and I had to wipe it off after I sprayed it. It is hard to hit a bug with the spray unless it’s ants or something slow. I didn’t trust spraying it many places since it is oily I assume it will stain. This is not my favorite product. I’ll stick to the flyswatter inside and maybe use this outdoors but even that makes me nervous because I’m not sure if it’ll stain certain surfaces.
1 reply from STEM Consumer Care team - 4 months ago
We're sorry to hear you were disappointed with STEM, and we appreciate you sharing your feedback. Since the spray is made with essential oils, it does have a stronger scent, but it usually fades within a few hours. If the area was sprayed heavily, the fragrance might linger a bit longer. To help the scent clear out more quickly, we recommend ventilating the space and wiping down surfaces with warm, soapy water. If there's anything else we can do, please don’t hesitate to reach out at 877-869-7546 (weekdays, 8 a.m. – 5 p.m. CT), and have your reference number handy: 22969091. We’d love to help get your space back to bug-free!
5 out of 5 stars
23 September, 2025
originally posted on influenster.com
STEM indoor outdoor kills ants,roaches, and flies
[This review was collected as part of a promotion.] Really like this product it’s safe for people and it’s also safe for pets, it definitely gets rid of the ants and flies and it’s well worth buying.
5 out of 5 stars
23 September, 2025
originally posted on influenster.com
Works great
[This review was collected as part of a promotion.] Nice that it can be used indoor and outdoors because I need something to use for these indoor ants, flies, and random bugs I find on the wall or ceiling
5 out of 5 stars
18 September, 2025
originally posted on influenster.com
This is safe around people and pets and that’s why
[This review was collected as part of a promotion.] Was very happy with this bug spray. It had a nice scent. It was extremely effective and very safe. The packaging was nice and it’s a great value for the money I like it because it’s safe around people and pets.
5 out of 5 stars
17 September, 2025
originally posted on influenster.com
Works great!
[This review was collected as part of a promotion.] Wow! This stuff is awesome! It got rid of my of the ant problems I’ve had for weeks in a matter of days!!! I couldn’t be more happy with it and would definitely buy it again!
5 out of 5 stars
13 September, 2025
originally posted on influenster.com
Great product to help prevent critters
[This review was collected as part of a promotion.] Very easy to use. Bottle has worked very well for the exterior of my home. Not letting flies roaches or ants. Get in safe for animals and people has a pepper mini smell but that is for helping keep the critters away. Overall a great product.
5 out of 5 stars
13 September, 2025
originally posted on influenster.com
Great product!
[This review was collected as part of a promotion.] I’m really impressed! I love that it’s a clean, plant-based option—especially important with a toddler in the house. It gives me peace of mind knowing I can keep pests away without worrying about harsh chemicals.
3 out of 5 stars
12 September, 2025
originally posted on influenster.com
Eh
[This review was collected as part of a promotion.] I didn’t find this item very effective as I still got many bugs indoors. Many many flies around my house so the spray may not be the issue of the product but unsure.
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.
4 out of 5 stars
5 September, 2025
originally posted on influenster.com
It’s good
[This review was collected as part of a promotion.] It’s a soft approach to traditional insect spray. It does have a smell that i am not crazy about, but i like the fact that is safer for plants and around the house overall. I like the bottle spray, better than the other spray. The price is reasonable for the amount.
4 out of 5 stars
3 September, 2025
originally posted on influenster.com
Safer option
[This review was collected as part of a promotion.] Seems to work well. I like the fact that it’s a safer choice than other ant and roach sprays out there. Safety is a big factor for my household. The only issue really can be the residue it leaves.
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 - 5 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
3 out of 5 stars
30 August, 2025
originally posted on influenster.com
Scadimg hot water works faster
[This review was collected as part of a promotion.] I received this product for free in return for my honest review of the product. I really didn't care for this product at all nor will I be purchasing it again. The scent was pungent and it hung around for hours afterwards. I had tried to use this product to kill ants that were around the outside of my home and it didn't kill them unless I really drowned them with it. I could have killed them faster with scalding hot water.