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What's Actually In Them
Start here, because this information is genuinely hard to find. Not one major retail listing we checked — Ortho's own page, Lowe's, Ace, Walmart or Amazon — states the active ingredients for any of these products. The figures below were read directly off the containers.
| Product | Active ingredients | Chemical classes |
|---|---|---|
| Bed Bug Trap | None — passive monitor | — |
| Bed Bug Killer 18 oz aerosol | Sumithrin, N-octyl bicycloheptene dicarboximide (MGK 264), imidacloprid | Pyrethroid + synergist + neonicotinoid |
| Bed Bug, Flea & Tick Killer 1 gallon | Bifenthrin 0.250%, imidacloprid 0.050%, piperonyl butoxide 0.450% | Pyrethroid + neonicotinoid + synergist |
| Bed Bug & Flea Killer Powder 12 oz | Deltamethrin 0.05% | Pyrethroid only |
Percentages on the aerosol wrap around the curve of the can and were not legible in the images available to us, so the three actives are named without figures. Everything else above is read from the panel.
Both sprays pair a pyrethroid with imidacloprid — a neonicotinoid, an entirely different chemical class — plus a synergist (MGK 264 in the aerosol, piperonyl butoxide in the gallon). That is textbook insecticide resistance management: resistance to one class does not confer resistance to the other, and the synergist blocks the enzymes bed bugs use to break down pyrethroids.
It means Ortho's "kills pyrethroid-resistant bed bugs" claim has a coherent mechanism behind it, rather than being pure marketing. It also means the widely repeated third-party claim that these products are simply two pyrethroids does not match what is printed on these containers.
Note the exception: the powder is a lone pyrethroid with no second class and no synergist. That is worth knowing when you decide how much to lean on it.
The Three-Step System
| Step | Purpose | Product |
|---|---|---|
| 1 — Detect | Find out whether you have them, and monitor | Bed Bug Trap |
| 2 — Treat | Spot treatment, or room treatment | Aerosol (spots) or 1-gallon with wand (rooms) |
| 3 — Cracks & crevices | Hard-to-reach harborage | Bed Bug & Flea Killer Powder |
The aerosol and the gallon are both Step 2. Ace Hardware describes the gallon explicitly as a Step 2 product for room treatment including large areas, not for broadcast treatment. The aerosol is the spot-treatment version for bed frames, headboards, floors and carpeting.
You rarely need both. Buy the aerosol for targeted work, or the gallon with the wand for a whole room. What you are missing if you buy only sprays is Step 1 and Step 3 — and Step 1 is arguably the most useful product on the list.
Product by Product
Bed Bug Trap — Step 1, detection
| Role | Detection and ongoing monitoring |
| Active ingredient | None — it is a passive trap |
| What it does | Catches bed bugs moving to or from a host, giving you a count |
| What it does not do | Does not reach harborage, does not kill eggs, will not clear an infestation on its own |
Bed Bug Killer — Step 2, 18 oz aerosol
| Actives | Sumithrin, MGK 264 (synergist), imidacloprid |
| Size | 18 oz (510 g). Indoor use. |
| Role | Spot treatment |
| Residual claim | Up to 16 weeks on ceramic (non-porous) surfaces |
| Where | Bed frames, headboards, floors, baseboards, furniture, moldings, ceilings, walls, carpeting |
| Also labeled for | Fleas, brown dog ticks, stink bugs, earwigs, clothes moths and carpet beetles |
| Handling | May be harmful if swallowed. Wash thoroughly with soap and water after handling. |
It is up to 16 weeks on ceramic, non-porous surfaces. Bed bugs live in fabric, wood, cardboard and carpet — porous surfaces, where residual life is shorter. The headline number describes the best case, not your bedroom. That is not a knock on the product; it is a reason not to assume one treatment bought you four months.
Bed Bug, Flea & Tick Killer — Step 2, 1 gallon with Comfort Wand
| Actives | Bifenthrin 0.250%, imidacloprid 0.050%, piperonyl butoxide 0.450% |
| Size | 1 gal (3.78 L). Indoor use only. |
| Role | Room treatment including large areas — not for broadcast treatment |
| Where | Around bed frames, baseboards, and mattress seams, tufts and folds |
| Frequency | Apply every 2 weeks while bed bugs are present |
| Reentry | Do not allow people or pets into treated areas until sprays have dried |
| Also kills | Fleas and ticks, plus listed ants, beetles, cockroaches and spiders — refer to the label |
Bed bug eggs hatch in roughly one to two weeks depending on temperature, and eggs are far harder to kill than adults. A single treatment kills what it contacts and leaves the eggs. Two weeks later those nymphs are feeding.
That is why the label says every two weeks while bed bugs are present — it is designed to catch the next generation. Treating once and declaring victory is the single most common DIY failure.
Bed Bug & Flea Killer Powder — Step 3, 12 oz
| Active | Deltamethrin 0.05% (other ingredients 99.95%) — a pyrethroid, with no second class and no synergist |
| Size | 12 oz (340 g). Indoor use only. |
| Role | Cracks, crevices and other hard-to-reach places |
| Why dust matters | Reaches voids a spray cannot — furniture joints, wall voids, behind trim |
| Application | A thin, barely visible layer |
| Where not to apply | Not on mattress surfaces or anywhere with direct skin contact — check the label for exact sites |
More is not better. A visible layer of dust is a barrier bed bugs walk around; a barely visible film is one they cross and pick up. Apply it like you are trying to hide it, not like you are trying to cover something.
The Resistance Claim, Handled Honestly
Ortho claims across every listing that the formula kills the toughest pyrethroid-resistant bed bugs and their eggs. That claim exists because pyrethroid resistance in bed bugs is real and widespread.
| Mechanism | How it works |
|---|---|
| Synergist | Piperonyl butoxide and MGK 264 block the enzymes bed bugs use to break down pyrethroids, restoring effectiveness against some resistant populations. Both sprays contain one. |
| Multiple classes | Both sprays pair a pyrethroid with imidacloprid, a neonicotinoid. Resistance to one class does not confer resistance to the other. |
| What this means | The claim has a real mechanism behind it. It is not a guarantee against every population, and resistance varies locally. |
We are not going to tell you these do not work on resistant bed bugs — the formulation is built exactly the way resistance management says to build it, and EPA-registered efficacy claims are reviewed. We are also not going to tell you they kill every resistant bed bug, because that is a marketing line, not a field guarantee.
The defensible version: if repeated correct treatment is not reducing your trap counts, the problem is almost always harborage access, not the chemistry. You are not reaching where they live. More product does not fix that.
The Trap Is the Most Underrated Product Here
Do I actually have bed bugs? Bites are a terrible diagnostic — people react differently, some not at all, and bites get blamed on bed bugs when they are fleas, mites or something else. Our carpet beetle guide covers an entire category of larval-hair dermatitis routinely misdiagnosed as bed bugs.
Is it working? Trap counts over time tell you whether treatment is reducing the population. Without monitoring you are guessing.
Are they gone? The hardest question in bed bug work. Absence of bites is not absence of bugs.
Place traps before you treat, so you have a baseline count.
Put them at bed and furniture legs, and along walls near where people sleep.
Check on a schedule and write down the counts with dates. This is the whole point.
Keep monitoring for weeks after treatment appears to have worked. Bed bugs can go long stretches without feeding.
If counts stop falling after repeated treatment, call a professional — do not buy more spray.
Using the Treatment Products Properly
| Rule | Why |
|---|---|
| Retreat every 2 weeks while bed bugs are present | Eggs survive the first pass and hatch in 1–2 weeks. This catches the next generation. |
| Dust goes on thin | Heavy dust is a barrier they walk around. Barely visible is what they cross. |
| Let sprays dry before reentry | Label reentry requirement for people and pets. |
| Do not treat mattress surfaces with dust | Check the label for permitted sites. Encasements handle the mattress instead. |
| The gallon is room treatment, not broadcast | Stated on the label. It is not a whole-house fogging substitute. |
Why DIY Fails — and It Is Usually Not the Product
| Harborage | Why DIY misses it |
|---|---|
| Inside wall voids | Bed bugs move through voids between rooms and units. Surface spray does not reach them. |
| Inside furniture frames | Sofas, recliners and upholstered chairs have internal voids. They live inside, not on the surface. |
| Behind and under baseboards | Requires dust applied into the void, not spray on the face. |
| Inside box springs | Classic harborage. Encasements address this; spray does not. |
| Electrical boxes and switch plates | Real harborage, and not a place for consumer spray. |
| Adjacent units | The big one. See below. |
Bed bugs move between adjoining units through wall voids, shared plumbing and electrical chases, and along baseboards. You can treat your apartment perfectly and be reinfested from next door, repeatedly, at your own expense.
If you rent: notify your landlord or property manager in writing as soon as you have evidence. Most professional programs treat adjacent units as standard practice, and a management company can coordinate what a tenant cannot. Keep copies.
Responsibility for bed bug treatment in rental housing depends on your lease terms and on state and local landlord-tenant law, and it is genuinely contested in many places. We are not lawyers and this page does not state what Alabama law requires of your landlord. Check your lease first, then Alabama landlord-tenant law, and if the amounts involved are significant, get advice. What is not in dispute: notifying management in writing, promptly, is in your interest either way.
When to stop buying product and call someone
| Signal | What it means |
|---|---|
| Trap counts not falling after 3–4 weeks of correct treatment | You are not reaching the harborage |
| You live in a multi-unit building | Coordinated treatment is usually required |
| The infestation is established rather than new | Widespread populations need heat or a professional program |
| Bed bugs in more than one room | It has spread beyond a spot-treatment problem |
| Anyone in the household is medically vulnerable, elderly, or an infant | Get it handled properly and quickly |
| You are treating the same rooms repeatedly | That is the definition of not working |
The Non-Chemical Work That Does the Heavy Lifting
These matter more than which spray you buy.
| Action | Why |
|---|---|
| Heat laundering | Wash and dry on high heat. The dryer does the killing, not the wash. The single most reliable thing a homeowner can do. |
| Mattress and box spring encasements | Seal what is inside in, keep new bugs out. Leave them on a year or more. Cheap and highly effective. |
| Vacuuming | Removes bugs and eggs. Dispose of the bag or canister contents immediately, outside, in a sealed bag. |
| Pull the bed away from the wall | Removes a bridge. Combine with interceptor traps at each leg. |
| Declutter around the bed | Every object is potential harborage. |
| Steam | Kills on contact where it reaches, including eggs. Slow, and does not reach voids. |
Three things not to do
Total-release foggers do not penetrate the cracks, voids and furniture interiors where bed bugs live. What they reliably do is disperse the population — driving bugs deeper into walls and into adjacent rooms or units, turning a contained problem into a spread one. None of the four Ortho products here is a fogger. Keep it that way.
It is expensive, it usually does not solve the problem, and dragging infested furniture through a building is how bed bugs get distributed to neighbors. Encase the mattress and box spring instead — a fraction of the cost, and it works. If something genuinely must go, wrap and seal it before it leaves the room and mark it clearly so nobody takes it home.
It is the most natural reaction and it makes things worse. Bed bugs follow the host — you will establish a second infestation in the new room. Stay where you are, use encasements and interceptors, and treat. Continuing to sleep in the treated room keeps the population concentrated where you can reach it.
The North Alabama Picture
Bed bugs are travel-associated. They move on luggage, in vehicles and with people. They are not a hygiene problem and they are not seasonal — which matters, because shame keeps people from reporting them early, and early reporting is what keeps an infestation small.
| Factor | Relevance |
|---|---|
| Huntsville and Madison growth | Rapid in-migration means high turnover in rental housing and heavy use of temporary and corporate accommodation |
| Defense and contractor travel | A workforce that travels constantly, stays in hotels, and moves between sites |
| Redstone Arsenal and related employment | Frequent relocations, temporary housing, shared accommodation |
| Student and multi-family housing | Multi-unit buildings are where coordination problems arise |
| Hotels and short-term rentals | The most common acquisition point for travelers |
These are risk factors, not measured prevalence. No county-level bed bug data for North Alabama was located, and none is asserted here.
Travel practice, which is the actual prevention
- At a hotel, put luggage in the bathroom or on a hard surface first — not on the bed or upholstered furniture.
- Pull back the sheet and check mattress seams, headboard edges and box spring corners. Look for live bugs, shed skins, or small dark spotting.
- Use the luggage rack, pulled away from the wall.
- At home, unpack in the garage or laundry room, not the bedroom.
- Run everything that can take it through a hot dryer cycle, whether or not it was worn.
- Keep the suitcase out of the bedroom closet if you travel often.
A hot dryer cycle is the most accessible bed bug control tool most households already own, and it works on eggs as well as adults. For a frequent traveler, running a load through the dryer after every trip is a genuinely effective habit that costs almost nothing.
What to Buy for What
| Situation | What to get |
|---|---|
| Not sure whether you have them | The trap first. Do not spray a problem you have not confirmed. |
| Confirmed, caught early, one room, single-family home | Trap for monitoring + aerosol for spots + powder for cracks. Treat every 2 weeks. Add encasements. |
| Confirmed, one room, want to treat the whole room | Trap + the 1-gallon with wand + powder. Same schedule. |
| Confirmed, apartment or multi-unit | Notify management in writing. Traps for evidence and monitoring. Expect coordinated professional treatment. |
| More than one room affected | Call a professional. |
| Treated repeatedly with no reduction in trap counts | Call a professional. More product is not the answer. |
| You bought the aerosol and are considering the gallon | Same step. Buy the gallon only if you need room-scale coverage. |
Quick reference
| Ortho system | 3 steps — detect, treat, cracks and crevices |
| Aerosol actives | Sumithrin + MGK 264 + imidacloprid |
| Gallon actives | Bifenthrin 0.250% + imidacloprid 0.050% + piperonyl butoxide 0.450% |
| Powder active | Deltamethrin 0.05% |
| Residual claim | Up to 16 weeks on non-porous surfaces |
| Retreatment interval | Every 2 weeks while bed bugs are present |
| Egg hatch | Roughly 1–2 weeks — why retreatment matters |
| Dust application | Thin and barely visible, never a heavy layer |
| Foggers | Never — they disperse the infestation |
| Throwing out furniture | Usually the wrong first move — encase instead |
| Sleeping elsewhere | Makes it worse — spreads them to the new room |
| Most effective home tool | A hot dryer cycle |
| Stop-and-call signal | Trap counts not falling after 3–4 weeks |
Frequently Asked Questions
Sources & References
- Active ingredient panels read directly from product containers, August 2026: Bed Bug Killer 18 oz aerosol (sumithrin, N-octyl bicycloheptene dicarboximide / MGK 264, imidacloprid — percentages not legible on the curved surface); Bed Bug, Flea & Tick Killer 1 gal (bifenthrin 0.250%, imidacloprid 0.050%, piperonyl butoxide 0.450%, other 99.250%); Bed Bug & Flea Killer Powder 12 oz (deltamethrin 0.05%, other 99.95%). No active ingredients were stated on Ortho's own product pages or on the Lowe's, Ace, Walmart or Amazon listings reviewed.
- Ortho / ScottsMiracle-Gro product pages for Home Defense Max Bed Bug Killer — the pyrethroid-resistance claim; the residual claim of up to 16 weeks on ceramic non-porous surfaces; the labeled pest list including fleas, brown dog ticks, stink bugs, earwigs, clothes moths and carpet beetles; the spot-treatment sites; the three-step system framing; and the handling statement.
- Ace Hardware and Lowe's listings for the 1-gallon (Mfr# 0212710) — the Comfort Wand application method; sites including bed frames, baseboards and mattress seams, tufts and folds; the instruction to apply every 2 weeks when bed bugs are present; the reentry statement; and the system position that this Step 2 product is for room treatment including large areas, not for broadcast treatment.
- UPCO listing for the 1-gallon — control claimed across all life stages including eggs, and the broader labeled pest list covering listed ants, beetles, cockroaches and spiders with indoor sites including bedroom furniture, pantries, behind wall hangings and luggage.
- General insecticide resistance-management principles for the synergist and multiple-class mechanisms. A third-party affiliate review site published in September 2025 reported the aerosol as imiprothrin 0.1% and cypermethrin 0.025%, both pyrethroids, with a 2-week residual. That does not match the ingredient panels on the containers we examined, and it conflicts with the manufacturer's own residual claim. We report our reading of the physical labels; confirm against the container you buy, since manufacturers reformulate.
- Limits and caveats: the label is the law — application sites, rates, PPE and reentry are set by the label, not by this page. No efficacy claim is made or contradicted here; we do not assert that any product will or will not clear an infestation. Landlord obligations are a legal question depending on lease terms and Alabama landlord-tenant law, and are not addressed. Bites and skin reactions are a medical question outside this page's scope. No county-level bed bug prevalence data for North Alabama was located; the regional section describes risk factors only. ASINs recorded as supplied — verify the listing still matches the product before purchase.