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Best Bed Bug Spray and Killers (2026): What Actually Works

By Jeffrey Grill, Editor | Last reviewed and fact-checked: October 29, 2026
Always read and follow the product label.

Quick answer: The best do-it-yourself bed bug killer, based on university testing, is a silica gel dust such as CimeXa, which killed pyrethroid-resistant bed bugs within one to two days in University of Kentucky tests. For a spray, choose one labeled for bed bugs that combines a pyrethroid with a second insecticide, imidacloprid, such as Bedlam Plus, because most bed bugs now resist pyrethroids alone. No spray works by itself: pair it with hot laundering, mattress encasements and interceptor traps.1,2,3,4

Key Takeaways

  • Most bed bugs resist cheap pyrethroid sprays. In one national study, 88% of populations carried resistance genes.3
  • Silica gel dust has the strongest evidence for do-it-yourselfers; diatomaceous earth is much slower.1,5
  • Many "different" sprays are the same formula. Bedlam Plus, Harris Egg Kill & Resistant, Ortho Home Defense Dual-Action and Hot Shot Bed Bug Killer (the pyrethroid-resistant version) share the same three ingredients.2,6,7,8,9
  • Bug bombs don't work on bed bugs and can start fires.10,11
  • Lysol isn't a bed bug product. Its label lists no insects.12
  • Use only EPA-registered products labeled for bed bugs and indoor use, and spray a mattress only if the label allows it.4,13

Store shelves are full of bed bug sprays, and many of them barely work against today's bed bugs. This guide explains which products have evidence behind them, how to use them safely, and why a spray works best as one part of a plan. For the full step-by-step plan, see how to get rid of bed bugs.

In this guide

  1. Best bed bug killers, rated
  2. Types of bed bug sprays and dusts
  3. Why many sprays stopped working
  4. Products to skip
  5. Does Lysol kill bed bugs?
  6. How to use a bed bug spray safely
  7. Why sprays alone usually fail
  8. FAQ

Best Bed Bug Killers, Rated by the Evidence

We rated each product by the independent research behind it: A = university lab and field tests against resistant bed bugs; B = label claims backed by maker data or limited independent tests; C = label claims only, or weak evidence. All are EPA-registered for bed bugs. We earn a small commission on product links.

ProductTypeEvidenceBest forNotes
CimeXa (silica gel dust)DustACracks, crevices, bed frames, wall voids behind switch plates; mattress seams per labelKilled all resistant adults tested within 1–2 days; 98% fewer bugs in apartment trials. Apply a barely visible layer with a paintbrush.1,14,15
Bedlam PlusAerosol sprayBMattress seams, furniture, carpet edgesPhenothrin + imidacloprid + a synergist. Label claims it kills resistant bugs and eggs, with residual action for weeks, depending on the surface.2,16
Harris Egg Kill & ResistantSprayBSame usesSame three ingredients as Bedlam Plus if the label shows EPA Reg. No. 1021-2570-3.7,6,17
Ortho Home Defense Dual-ActionAerosol sprayBSame usesSame three ingredients as Bedlam Plus.8,6
Raid Max Bed Bug Extended ProtectionSprayBMattress seams, furniture, carpetSame three ingredients as Bedlam Plus. Other Raid bed bug cans, including some Raid Max Bed Bug & Flea versions, use a pyrethroid-only formula, so check for imidacloprid on the label.18,19,20
STERI-FABContact sprayCSpot-killing bugs you can seeAlcohol plus phenothrin. Kills on contact only, no residual action and no bed bug egg claim; flammable.21

Because the B-rated sprays share one formula, pick by price and format (aerosol or foam), not by brand.2,6 Independent tests of these consumer combination sprays are limited, so treat label claims with some caution.16

Spraying the seam of a mattress with a bed bug spray
Treat only seams, tufts and edges of a mattress, and only with a product whose label allows mattress use.

Types of Bed Bug Sprays and Dusts

  • Contact (knockdown) sprays kill only the bugs they wet and do little once dry. Bed bugs hide in cracks, so contact sprays miss most of them.15,21
  • Residual sprays leave a deposit that keeps working on bugs that walk over it. How long it lasts depends on the product and surface; Bedlam Plus, for example, claims up to 3 weeks on carpet and longer on hard surfaces.2
  • Dusts (desiccants) damage the bug's waxy outer layer so it dries out. Bed bugs can't become resistant to them the way they do to insecticides. Use only dusts labeled for bed bugs, put them in cracks, crevices and wall voids (and on a mattress only if the label allows it), and never use pool- or food-grade diatomaceous earth.22,4,14
  • Insect growth regulators disrupt development rather than kill adults, and a common one, Gentrol, is labeled for professional use only.22,23

Silica gel vs. diatomaceous earth: in Kentucky tests, 97.5% of bed bugs died within a day after briefly walking over silica gel, compared with 10% on diatomaceous earth.1 The EPA notes that desiccant dusts can take months to clear an infestation.4 See our guide to natural bed bug treatments for more on DE.

Why Many Bed Bug Sprays Stopped Working

Most inexpensive sprays rely on pyrethroids or pyrethrins. Researchers at the University of Kentucky found bed bugs from Kentucky and Ohio homes with extremely high resistance to two common pyrethroids, and a later study found resistance genes in 88% of 110 U.S. populations. A bug resistant to one pyrethroid is usually resistant to others.24,3 In resistant populations, these sprays may just chase bugs into new hiding places.22

That's why the EPA suggests switching to a different class of insecticide or using a combination product.22 Even combination products aren't immune: Kentucky researchers found field populations that were less susceptible to them.25

Products to Skip

  • Bug bombs (foggers): Ohio State found three national brands had little or no effect on bed bugs, and too many canisters can cause an explosion.10,11
  • Pyrethroid-only sprays: these are the weakest choice against resistant bed bugs.3,16
  • Outdoor or farm insecticides: never use them indoors. A CDC review linked bed bug insecticides to 111 illnesses and one death in seven states from 2003 to 2010. Over-use was the most common cause, and some cases involved outdoor-only products used indoors.26,13
  • Professional-only products: some products sold online, such as Phantom, are labeled for use only by licensed applicators and can't be used on mattresses.27
  • Most "natural" sprays: in Rutgers lab tests, only 2 of 11 natural products killed more than 90% of young bed bugs, and only when sprayed directly on them.28

Does Lysol Kill Bed Bugs?

No, not reliably. Lysol is a disinfectant, and its label lists no insects.12 A soaking, direct spray might kill some bugs, the way rubbing alcohol kills at most about half of the bugs it hits, but it won't reach bugs in hiding or their eggs.29,30 When Rutgers researchers tested a disinfectant that people believed would kill bed bugs, every bug survived a direct spray.29

Alcohol-based sprays are also flammable. The EPA warns against using rubbing alcohol, and in 2017 a Cincinnati woman started a fire trying to kill bed bugs with it.4,31

How to Use a Bed Bug Spray Safely

  1. Check the label for an EPA registration number and the words "bed bugs" and "indoor."13,4 The EPA's bed bug product search tool can help, though it hasn't been updated since 2019.32
  2. Spray a mattress only if the label allows it, and then only the seams, tufts and edges. Let it dry and put on clean sheets.2,13
  3. Keep children and pets out until surfaces are dry, and cover aquariums.2,6
  4. Don't over-apply. Using more than the label says, or spraying daily, raises health risks and can build resistance.33,26
  5. Air out the room after alcohol-based sprays, and keep them away from flames.21

If someone feels sick after a pesticide is used, call Poison Control at 1-800-222-1222.13

Why Sprays Alone Usually Fail

Bed bugs hide in cracks, seams and wall voids that sprays don't reach, and they tend to stay within about 8 feet of where people sleep.11,34 Some contact sprays, such as STERI-FAB, make no bed bug egg claim.21 In two Rutgers field studies, professional sprays cut bed bug counts by about 87% to 98% but rarely cleared apartments within 8 to 12 weeks.35,36

Combine any spray with:4,15,29

  • Heat: run bedding and clothes through a hot dryer; wash at 120°F or hotter.
  • Steam: at least 130°F at the surface, with a diffuser so bugs aren't blown away. Steam at about 113°F, the figure some sites give, takes far too long to kill bugs and eggs.4,37
  • Vacuuming: seal and throw out the contents outdoors.
  • Mattress and box spring encasements: trap any bugs inside until they die (we earn a small commission).
  • Interceptor traps under the bed legs, checked weekly, to see whether treatment is working.

When to call a pro: if other apartments in your building have bed bugs, or you're still catching bugs after several weeks of doing everything right, call a licensed pest professional.29,34 Call 1-877-673-2704 for free quotes from local bed bug exterminators (we may be paid when you call), or ask an exterminator online (we may be paid when you use this link). See also how to choose a bed bug exterminator.

What the Research Shows

  • Silica gel beats DE. After a brief walk across treated carpet, 97.5% of bed bugs died within 24 hours on silica gel, compared with 10% on diatomaceous earth.1
  • Resistance is the norm. 88% of 110 U.S. bed bug populations carried genes for pyrethroid resistance.3
  • Foggers fail. Three national bug-bomb brands had little or no effect on five field populations in Ohio State tests.10

Bed Bug Spray: Frequently Asked Questions

What is the best bed bug killer?

For do-it-yourselfers, silica gel dust such as CimeXa has the strongest research behind it. For a spray, choose one that combines a pyrethroid with imidacloprid, such as Bedlam Plus, and use it with other steps.1,2

Does Lysol kill bed bugs?

Not reliably. Lysol is a disinfectant with no insects on its label. A direct soaking might kill a few bugs, but not hidden bugs or eggs.12,29

Can I spray my mattress for bed bugs?

Only with a product whose label lists mattresses, and only on seams, tufts and edges. Let it dry before using the bed.2,13

Do bed bug sprays kill eggs?

Some do, according to their labels, such as the imidacloprid combination sprays. Many contact sprays, including STERI-FAB, make no bed bug egg claim.2,21

Do bug bombs kill bed bugs?

No. University testing found foggers had little or no effect on bed bugs, and they can create fire and health risks.10,11

This page earns commissions from some product links (we may be paid when you buy), which doesn't change our ratings.

References

  1. Potter MF, Haynes KF, Gordon JR, Washburn L, Washburn M, Hardin T. Silica gel: a better bed bug desiccant. Pest Control Technology, 2014. www.pctonline.com
  2. McLaughlin Gormley King Co. Multicide Spray 29511 / Bedlam Plus EPA-accepted label, EPA Reg. No. 1021-2569. U.S. EPA, 2026. www3.epa.gov
  3. University of Kentucky College of Agriculture. Bed bug resistance to insecticides is widespread. University of Kentucky, 2010. news.mgcafe.uky.edu
  4. U.S. Environmental Protection Agency. Do-it-yourself Bed Bug Control. U.S. EPA, n.d. www.epa.gov
  5. Akhtar Y, Isman MB. Efficacy of diatomaceous earth and a DE-aerosol formulation against the common bed bug, Cimex lectularius, in the laboratory. Journal of Pest Science 89(4):1013–1021, 2016. wiki.pestinfo.org
  6. McLaughlin Gormley King Co. Multicide Spray 29512 EPA-accepted label, EPA Reg. No. 1021-2570. U.S. EPA, 2026. www3.epa.gov
  7. Tennessee pesticide registration database. Harris Egg Kill & Resistant Bed Bug Spray registered product record, EPA Reg. No. 1021-2570-3. TraceFirst LCP, 2026. tnlcp.lcp.tracefirst.com
  8. DoMyOwn. Ortho Home Defense Dual-Action Bed Bug Killer product page. DoMyOwn, 2026. www.domyown.com
  9. Food Lion. Hot Shot Bed Bug Killer 17.5 oz product page. Food Lion, 2026. www.foodlion.com
  10. ScienceDaily. Bug-bomb foggers are no match for bed bugs, summarizing Jones SC and Bryant JL, Journal of Economic Entomology 105(3). ScienceDaily, 2012. www.sciencedaily.com
  11. U.S. Environmental Protection Agency. Should I Use a Fogger? U.S. EPA, n.d. www.epa.gov
  12. Reckitt Benckiser. Lysol Disinfecting Spray EPA-accepted label, EPA Reg. No. 777-99. U.S. EPA, 2014. www3.epa.gov
  13. CDC and ATSDR. Health Concerns about Misuse of Pesticides for Bed Bug Control, HAN 00336. CDC Health Alert Network, 2012. archive.cdc.gov
  14. Rockwell Labs Ltd. SiliCide / CimeXa Insecticide Dust EPA-accepted label, EPA Reg. No. 73079-12. U.S. EPA, 2016. www3.epa.gov
  15. Potter MF. Bed Bugs, ENTFACT-636. University of Kentucky Entomology, 2026. entomology.mgcafe.uky.edu
  16. Wang C, Singh N, Zha C, Cooper R. Efficacy of selected insecticide sprays and aerosols against the common bed bug, Cimex lectularius. Insects 7(1):5, 2016. pmc.ncbi.nlm.nih.gov
  17. P.F. Harris Manufacturing. Harris Egg Kill & Resistant Bed Bug Killer, 128 fl oz. P.F. Harris, 2026. pfharris.com
  18. Wegmans. Raid Max Bed Bug & Flea Killer Foaming Spray for Mattresses, Carpets and More, 17.5 oz product page. Wegmans, 2026. www.wegmans.com
  19. Nationwide Industrial Supply. Raid Max Bed Bug & Flea Killer product page. Nationwide Industrial Supply, 2026. www.nationwideindustrialsupply.com
  20. McLaughlin Gormley King Co. Multicide Lice & Dust Mite Spray 27911 / Bedlam EPA-accepted label, EPA Reg. No. 1021-1767. U.S. EPA, 2026. www3.epa.gov
  21. Noble Pine Products Co. STERI-FAB EPA-accepted label, EPA Reg. No. 397-13. U.S. EPA, 2013. www3.epa.gov
  22. U.S. Environmental Protection Agency. Pesticides to Control Bed Bugs. U.S. EPA, n.d. www.epa.gov
  23. Zoecon. Gentrol Aerosol IGR label, EPA Reg. No. 2724-484. Industrial Fumigant Company, 2017. label.indfumco.com
  24. Romero A, Potter MF, Potter DA, Haynes KF. Insecticide resistance in the bed bug: a factor in the pest's sudden resurgence? Journal of Medical Entomology 44(2):175–178, 2007. scholars.uky.edu
  25. Gordon JR, Goodman MH, Potter MF, Haynes KF. Population variation in and selection for resistance to pyrethroid-neonicotinoid insecticides in the bed bug. Scientific Reports 4:3836, 2014. scholars.uky.edu
  26. Jacobson JB, Hudson NL, Calvert GM, et al. Acute illnesses associated with insecticides used to control bed bugs, seven states, 2003–2010. MMWR 60(37):1269–1274, CDC, 2011. www.cdc.gov
  27. BASF Corporation. TC-314 / PT Phantom II Pressurized Insecticide EPA-accepted label, EPA Reg. No. 499-548. U.S. EPA, 2024. www3.epa.gov
  28. Singh N, Wang C, Cooper R. Potential of essential oil-based pesticides and detergents for bed bug control. Journal of Economic Entomology 107(6), 2014. archive.sebs.rutgers.edu
  29. Wang C, Cooper R. Cost-Effective and Money-Wasting Bed Bug Control Methods, FS1251. Rutgers NJAES Cooperative Extension, 2019. njaes.rutgers.edu
  30. Texas A&M AgriLife Extension. Rubbing alcohol not a good solution for bed bugs. Insects in the City, Texas A&M AgriLife, 2014. citybugs.tamu.edu
  31. Associated Press. Woman burns down Cincinnati, Ohio, home trying to kill bedbugs. CBS News, 2017. www.cbsnews.com
  32. U.S. Environmental Protection Agency. Find a Bed Bug Pesticide Product. U.S. EPA, 2019. www.epa.gov
  33. National Pesticide Information Center. Bed Bugs. Oregon State University and U.S. EPA, n.d. npic.orst.edu
  34. Centers for Disease Control and Prevention. About Bed Bugs. CDC, 2024. www.cdc.gov
  35. Wang C, Singh N, Cooper R. Field study of the comparative efficacy of three pyrethroid/neonicotinoid mixture products for the control of the common bed bug, Cimex lectularius. Insects 6(1):197–205, 2015. www.mdpi.com
  36. Wang C, Singh N, Cooper R. Efficacy of an essential oil-based pesticide for controlling bed bug infestations in apartment buildings. Insects 5(4):849–859, 2014. www.mdpi.com
  37. Kells SA, Goblirsch MJ. Temperature and time requirements for controlling bed bugs under commercial heat treatment conditions. Insects 2(3):412–422, 2011. www.mdpi.com

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