Stem Plant Insect Spray, Indoor and Outdoor Bug Killer - 12oz
$7.29
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3.2 out of 5 stars with 48 reviews
quality: 2.36 out of 5
value: 2.36 out of 5
20% would recommend
15 recommendations
1 out of 5 stars
Thumbs down graphic, would not recommend
15 March, 2026
Plant killer
Bleached the leaves on my plant within a few hours. Not sure if the plant will make it, very sad
5 out of 5 stars
Thumbs up graphic, would recommend
14 March, 2026Verified purchase
Very pleased!
So far so good!! I had an issue with spider mites, and this has done a pretty good job of eliminating them. I read some reviews that others experienceed damage to their plant. Which I have not as of yet, I will update this review if needed. What I did was absolutely drench the plant with the Stem spray gave it about 15 minutes, saw where the spider mites were trying to escape to and congregating and drenched some more. Then I gave it about another 15/20 minutes saw no activity!! Then I completely sprayed the plant down with water to rinse all of the treatment and hopefully dead mites away. I read reviews where people said this really helped minimize or eliminate any damage to the plant itself. And it’s been about six hours since and I have not seen a single mite or web or anything! Which normally, even if I would run spray the plant down with water alone (since the mites do not like water or humidity) within an hour, I would see them rebuilding webs and moving around. Now I don’t!! I think it worked 🤞🤞 I am very pleased so far!!
3 out of 5 stars
Thumbs up graphic, would recommend
14 March, 2026
Works on roaches, does not kill gnats
I don’t spray this on my plants… I see reviews saying it killed the plants, I’m assuming that was by spraying directly on. I use for just the surface soil or inside the 2nd container where roaches sometimes like to live. Kills the roaches fast. Does not work on gnats. I use diluted neem oil directly on soil and on plants for that- only in the evening, it will cause burn if applied during the day.
1 out of 5 stars
Thumbs down graphic, would not recommend
14 March, 2026Verified purchase
do not buy - killed my Monstera new growth and money tree
do not buy - killed my plants
1 reply from stem Team team - 10 days ago
We're sorry to hear about your experience, Emily. This is certainly not typical and our team would appreciate the opportunity to further assist you. When you have a moment, reach us at 877-869-7546 (weekdays between 8 a.m. and 4:30 p.m. CT) and provide your reference number: 23089439. We hope to hear from you! – Brooklyn, STEM Consumer Care
5 out of 5 stars
Thumbs up graphic, would recommend
16 August, 2025Verified purchase
Plants
Keeps my plants bug free.
1 out of 5 stars
Thumbs down graphic, would not recommend
5 August, 2025
don't buy.
Killed my plants pretty quickly, wish i would've read the reviews first like I usually do..😔
1 reply from stem Team team - 8 months ago
We're sorry to hear about your experience with STEM Plant & Garden Insects. When used as directed, this product is meant to help control thrips, spider mites, and aphids on ornamental plants. If it wasn’t overapplied, what you described is definitely not what we’d expect. Thank you for bringing this to our attention, we’d love the chance to learn more and help make things right. Please give us a call at 877-869-7546 (weekdays, 8 a.m. – 5 p.m. CT) and mention reference number 22916758. We look forward to hearing from you. – Megan, STEM Consumer Care
5 out of 5 stars
17 July, 2025Verified purchase
works
I had pesty ant hills on the patio and nothing was working. I am limited in what i can use out back due to the dogs. I sprayed this product when they were inside and it works amazingly. I bought another bottle to have some extra on hand
1 out of 5 stars
Thumbs down graphic, would not recommend
22 June, 2025Verified purchase
Killes my plants
It killed my plants. Now they are drying up and yellow. Sure my plants had holes but I would prefer this over what this spray did to my plants. Absolutely horrible. Do not purchase.
1 reply from stem Team team - 9 months ago
We’re sorry to hear about your experience. While our product has been tested on a variety of plants, some can be more delicate and may benefit from spot testing before full application. When sprayed once from about 12 inches away, we wouldn’t typically expect any issues. Since this didn’t meet your expectations, we’d love to connect and work with you on finding a science-backed solution to keep those bugs at bay. Please give us a call at 877-869-7546 (weekdays, 8 a.m. – 5 p.m. CT) and mention reference number 22874334. We look forward to your call. – Megan, STEM Consumer Care
1 out of 5 stars
Thumbs down graphic, would not recommend
13 June, 2025Verified purchase
Dumb dumb dumby dumb dont buy
Killed my petunias in just a few hours. Don’t buy this!
1 reply from stem Team team - 9 months ago
Oh dear! We're very sorry to learn about your unexpected experience with this Plant Spray. We'd appreciate the chance to discuss this further so we can best assist you. When you have a moment, please give our experts a call at 877-869-7546 (weekdays between 8 a.m. and 5 p.m. CT). Be sure to provide your reference number: 22867652. We hope to hear from you! – Brooklyn, STEM Consumer Care
1 out of 5 stars
Thumbs down graphic, would not recommend
30 May, 2025Verified purchase
Could of went to the store myself
Placed oder on the May 27th and still haven't received it keep getting false information on receiveing my package 1st at 8:05a its being delivered today 5 27 between 1:35p - 3:35p. Then another one right behind that text your package is out for delivery @1:30p. Then the lying text at 8:09p we tried to deliver your package. All lies I was home all day. Then to top it off an email saying its going to be delivered 5 30 25 and lord behold I had to call to see where's my delivery and they ssaid it's coming June 1st. Really i could of went to the store myself or the neighborhood groecery store for this crap or BJ's. Never again
1 out of 5 stars
Thumbs down graphic, would not recommend
6 May, 2025Verified purchase
Regret
Killed all my plants. Absolutely do NOT buy! Also smells so awful. Tiny bottle.
1 reply from stem Team team - 11 months ago
We’re sorry to hear that you were disappointed with STEM Plant & Garden. When used as directed, with no more than 2 sprays, it’s designed to effectively target those pesky bugs. However, we do recommend avoiding use on edible plants. We truly want to understand more about your experience and would love to talk further. Give us a call at 877-869-7546 (weekdays, 8 a.m. – 5 p.m. CT) and be sure to provide reference number: 22831959. Hope to chat soon! – Megan, STEM Consumer Care
1 out of 5 stars
Thumbs down graphic, would not recommend
20 July, 2024Verified purchase
Should be called PLANT killer, not insect killer
This product ruined my $150 worth of plants!!! It left them a spotted mess & dying! I'm absolutely sick about it. I would have much preferred a few holes in the leaves. The last picture shows the color of my beautiful flowers before this garbage left "bleach" spots all over them!
1 reply from stem Team team - 2 years ago
We are so sorry to hear this was your experience with STEM Plant & Garden Insects. We'd expect this to work well to rid your indoor ornamental plants of any hitchhikers without harming the plant. We take comments like yours seriously, and I have passed your feedback along to my team. We would like to see how we can help! When you have a moment, please give us a call weekdays at 1-800-558-5252 between 8 a.m. - 5 p.m. CT. Provide this reference number, 22543966, for the fastest service. We hope to hear from you soon! – Mindi, STEM Consumer Care
1 out of 5 stars
Thumbs down graphic, would not recommend
15 July, 2024Verified purchase
No!!!
If I can give zero or negative I would. Its killed my plants
1 reply from stem Team team - 2 years ago
Oh dear! We're sorry to hear about this. This is formulated for use on indoor and outdoor ornamental plants with confidence when used according to label directions. This is not formulated to be used on edible plants. That said, we're here to help. When you can, give us a ring at 877-869-7546, weekdays between 8 a.m. and 5 p.m. CT. Be sure to mention your reference number, which is 22540516. Looking forward to your call. – Brooklyn, STEM Consumer Care
1 out of 5 stars
Thumbs down graphic, would not recommend
5 July, 2024Verified purchase
Stay away
Killed my plants. Absolutely horrible product I’ve been growing my raspberry bush for 3 years, and now I have to start over
1 reply from stem Team team - 2 years ago
Thank you for taking the time to write your review. We're sorry for any confusion with our STEM Plant & Garden Insects Spray. We always recommend following label directions and as stated, this is not formulated for edible plants. This is great for killing aphids, spider mites, and thrips on ornamental plants only. Rest assured, we'd be happy to talk further. You can reach us at 877-869-7546 (weekdays, 8 a.m. – 5 p.m. CT) and mention reference number: 22528577. We look forward to your call. – Megan, STEM Consumer Care
3 out of 5 stars
Thumbs down graphic, would not recommend
22 June, 2024Verified purchase
They keep coming back!
The product is okay. It does indeed kill gnat but it doesn't prevent more from landing on the plant. I wish it had repelling properties as well.
1 out of 5 stars
Thumbs down graphic, would not recommend
26 May, 2024Verified purchase
Pricey little bottle that killed my plants but not the bugs
Did not kill the bugs, but certainly killed my healthy plants in under 24 hours. This is not "plant safe". Price is also high for such a small bottle.
1 reply from stem Team team - 2 years ago
Thank you for your feedback. We're sorry to hear our STEM Plant & Garden Insects killed your plants and did not get rid of those pesky bugs. When following label directions, we expect this to effectively kill aphids, spider mites, or thrips from ornamental houseplants. As this wasn't the case, we'd like the chance to talk and see where things went wrong. Please give us a call at 877-869-7546 (weekdays, 8 a.m. – 5 p.m. CT) and mention reference number: 22485308. We hope to speak soon. – Megan, STEM Consumer Care