STEM Kills Indoor & Outdoor Fly, Mosquito & Gnat Insect Killer Bug Spray Value Size, 12 oz
STEM Kills Indoor & Outdoor Fly, Mosquito & Gnat Insect Killer Bug Spray Value Size, 12 oz
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STEM Kills Indoor & Outdoor Fly, Mosquito & Gnat Insect Killer Bug Spray Value Size, 12 oz

4.3 stars out of 1491 reviews
(4.3)|
1,491 ratings

Key item features

  • Natural Ingredients: Essential oil-made bug spray effectively kills flies, mosquitoes, and gnats using plant-based active ingredients.
  • Safe Application: Formulated for safe use around children and pets when applied as directed, ensuring family well-being.
  • Pleasant Scent: Features a fresh scent without added dyes, fragrances, or harsh chemical odors, enhancing user comfort.
  • Expert Tested: Entomologist-tested pesticide for home use, confirming its efficacy against flying insects.
  • Botanical Actives: Developed with geraniol and lemongrass, neurotoxic essential oils that target the nervous system of pests.
  • Versatile Use: Suitable for both indoor and outdoor applications, creating a bug-free environment in various settings.
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Current price is $7.9666.3 ¢/oz
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Customer ratings & reviews

4.3 out of 5 stars
stars1,491 ratings1,170 reviews
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Reviews summary

Pros
  • : Product is safe for use in pet presence.
  • : Has a light, non-overpowering scent.
Cons
  • : Leaves behind a residue that requires cleaning.
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Showing 1-3 of 1,170 reviews

Nov 8, 2025
Sara
Item details
Scent: Fresh
5 out of 5 stars review

Verified Purchase

LOVE IT

We've had a problem with pantry moths and tried numerous other products that were not effective nor safe. I tried STEM gnat and fly spray and it wiped them out! I sprayed once and resprayed the following day. I waited a week for any other eggs to hatch and sprayed again. Haven't seen them since.

Helpful?6F3NUFYDNJ42975519275
Jun 11, 2025
anonymous
Item details
Scent: Fresh
5 out of 5 stars review

Verified Purchase

Pretty goid

I'm not gonna lie, the reviews kinda gave me a reason to believe this product wouldn't work, but it WORKED, you spray on contact, kills within a couple seconds, only thing is the smell kinda strong bothers me, but I'm not gonna complain cause it did its job also it is oily but it doesn't matter it worked

Helpful?6F3NUFYDNJ42975519275
Aug 27, 2025
James
Top Reviewer
Item details
Scent: Fresh
4 out of 5 stars review

Verified Purchase

This product works well on the bugs listed. It killed the gnats or drain flies on contact. The only problem that I had was spraying it in small or confined areas, it bothered my breath, but I do have COPD and I would recommend taking precautions ( open windows or wear a mask) when using.

Helpful?6F3NUFYDNJ42975519275

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