Best Home Roach Sprays: Dry Aerosol, Residual and Plant-Based

The best roach killer spray for home use is Bengal Gold Roach Spray, a dry aerosol with an insect growth regulator that reaches cracks and voids. Raid Ant & Roach is the budget residual spray, Harris Roach Killer is an odorless trigger spray, Raid MAX Perimeter suits entry points and STEM is the plant-based option. Use any of them alongside bait.

When a Roach Spray Makes Sense

A spray is the right tool for a roach in the open and for the cracks and voids where roaches rest, and the wrong tool for an infestation on its own. University of California IPM's cockroach guide notes that sprays give quick but temporary knockdown, can drive roaches to other areas and face resistance, while baits remain the primary control tool.

Used well, a spray complements bait. University of Kentucky entomologists writing on cockroach elimination advise targeting hiding spots rather than open surfaces, and keeping sprays away from bait so roaches keep feeding.

For gels, stations and powders, see our guide to the best roach killers for the home, and the roach killer guides cover each product type in depth.

Residual, Contact and Dry Aerosol Sprays

The best roach spray for indoors depends on the job: reaching voids, leaving a residue in entry cracks or killing a single roach on the counter. The four main types differ in how far they reach and how long they last.

Most homes need one residual or dry aerosol for cracks and voids, plus bait. A plant-based spray is a convenience for roaches in the open, not a treatment.

How We Selected These Sprays

We compared consumer roach sprays on how they reach roaches, the active ingredient, residual claims, where the label allows them and what buyers report about results and sprayers. Our sources were the makers' listings, Amazon's review digests and UC IPM and University of Kentucky guidance; we did not test the products.

Professional concentrates are covered in a separate guide, and foggers were left out because they rarely reach the cracks where roaches hide. Peppermint “repellent” sprays without evidence of controlling roaches were also passed over.

The dry aerosol comes first, because it reaches the voids where roaches rest rather than only the surfaces you can see.

Bengal Gold Roach Spray: Best Overall

Bengal Gold is a dry aerosol for cracks, crevices and voids, sold as two 11-ounce cans. The maker says it pairs a killing ingredient with insect growth regulator technology that breaks the roach life cycle.

• The fine dry spray carries the active ingredient deep into hiding spots without an oily residue, per the maker.
• An extension tube reaches baseboards, cabinets, appliances and plumbing openings.
• The maker highlights prevention of reinfestation for up to 6 months.
• Buyers of this line call it highly effective, odorless and long-lasting, with mixed views on value.

Choose it for German cockroaches in kitchen and bathroom voids, applied into cracks a few inches away from your bait. Expect to see roaches flushed out for a short time after treating.

OUR CHOICE

Bengal Gold Roach Spray Dry Aerosol 11 oz 2-Pack

Dry aerosolGrowth regulator2 cans

Best for: German cockroaches in voids and cracks

• ✓Reaches behind cabinets and appliances, per buyers
• ✓Odorless, per buyers
• ✓IGR technology, per the maker
• −Flushes roaches out briefly
• −Mixed value feedback

Editor's Note

It reaches the voids where roaches rest. Apply it into cracks a few inches from your bait.

Check Price

Specifications (2)

Item Form

Aerosol

Number of Items

2

Raid Ant & Roach Killer: Best Budget Residual Spray

Raid's Ant & Roach aerosol comes in a 17.5-ounce can and kills on contact with residual action on treated surfaces.

• The maker says it keeps killing roaches for up to 13 weeks.
• It lists cockroaches, waterbugs, palmetto bugs, ants, silverfish and spiders.
• Buyers of the line find it fast, effective and good value, with no lingering odor.
• Spray performance is the main complaint, with some cans that sputter or fail.

Choose it for roaches in the open and for entry cracks around doors and pipes. Retreat as the label directs, and never spray near bait or on food surfaces.

BUDGET PICK

Raid Ant & Roach Killer Spray 17.5 oz

AerosolContact kill

Best for: Budget contact and residual spraying

• ✓Kills on contact, per buyers
• ✓Residual action, per the maker
• ✓Good value, per buyers
• −Spray performance problems on some cans
• −Does not reach the colony

Editor's Note

Use it for roaches in the open and entry cracks, never near bait.

Check Price

Specifications (1)

Item Form

Aerosol

Harris Roach Killer: Best Odorless Trigger Spray

Harris Roach Killer is a ready-to-use deltamethrin trigger spray in a 32-ounce bottle. The maker says it kills once dry and keeps killing roaches for weeks.

• The formula is odorless and non-staining, per the maker.
• It is EPA registered for use in homes.
• Buyers appreciate the lack of odor.
• Results are mixed, and many buyers report trigger sprayers that do not work properly.

Choose it for baseboard cracks and under sinks when you want no smell in the house. Test the trigger right away, since sprayer failures are the most common complaint. If it fails, return the bottle rather than moving the pesticide into another container.

Because it kills once the spray dries, Harris works best as a deliberate crack treatment rather than for chasing a running roach.

Harris Roach Killer Spray 32 oz

Trigger sprayDeltamethrin

Best for: An odorless trigger spray for baseboards

• ✓Odorless, per buyers
• ✓Non-staining, per the maker
• ✓EPA registered
• −Trigger sprayer failures, per buyers
• −Mixed results

Editor's Note

It suits baseboard cracks when you want no smell. Test the trigger right away.

Check Price

Specifications (3)

Active Ingredients

Deltamethrin

Item Form

Liquid,Spray

Liquid Volume

32 fluid ounces

Raid MAX Perimeter Protection: Best for Entry Points

Raid MAX Perimeter Protection is a 22-ounce deltamethrin spray at 0.03% for indoor and outdoor barrier treatment.

• The maker says it keeps killing bugs for up to 18 months and creates an insect barrier.
• It lists more than 15 kinds of insects and leaves no odor, oily residue or stains, per the maker.
• Buyers find it effective in kitchens and odorless.
• Others say it did not work on German roaches, and value feedback is poor.

Choose it for doorways, windows and pipe entries where larger roaches come in from outside. It is not the answer for German cockroaches breeding indoors.

Raid MAX Perimeter Protection Spray 22 oz

SprayDeltamethrinIndoor/Outdoor

Best for: Entry points against roaches from outside

• ✓Up to 18 months, per the maker
• ✓Odorless, per buyers
• ✓Indoor and outdoor use
• −Did not work on German roaches for some buyers
• −Poor value feedback

Editor's Note

Use it at doors, windows and pipe entries where large roaches come in. It is not a fix for indoor German cockroaches.

Check Price

Specifications (3)

Active Ingredients

Deltamethrin 0.03%

Item Form

Spray

Liquid Volume

22 fluid ounces

STEM Plant-Based Bug Spray: Best Plant-Based Option

STEM is SC Johnson's plant-based aerosol for ants, roaches and spiders, in a 10-ounce can.

• The maker describes botanical extracts and no added dye or fragrance.
• It is for indoor and outdoor use around people and pets when used as directed, per the maker.
• Buyers find it effective on contact and appreciate the plant-based formula.
• Buyers often report an oily residue that can stain walls and no lasting effect.

Choose it for a roach on the counter when you want to avoid synthetic insecticides. Wipe the surface afterward, and do not expect it to protect cracks the way a residual spray does.

STEM Plant-Based Bug Spray Aerosol 10 oz

Plant-basedAerosol

Best for: Plant-based spot kills

• ✓Plant-based active ingredient
• ✓Aerosol avoids pump failures
• ✓Pet-safe, per buyers
• −Oily residue that can stain, per buyers
• −No lasting effect, per some buyers

Editor's Note

It kills a roach on the counter without synthetic insecticides. Wipe the surface afterward.

Check Price

Specifications (1)

Item Form

Aerosol

The right spray depends on where the roaches are and what else you are using.

How to Spray for Roaches the Right Way

• Bait first: place gel or stations near hiding spots before you spray.
• Spray into cracks: aim at hinges, gaps behind appliances, under sinks and pipe openings.
• Stay away from bait: keep a few inches between spray and any bait placement.
• Skip open surfaces: no spraying of counters, tables, floors or dishes.
• Clear the room: keep children and pets out until surfaces are dry.
• Retreat by the label: follow the interval rather than spraying daily.

Essential oils are often suggested as roach repellents, but we found no reliable evidence that they keep roaches away from a home, and many are a concern for cats.

Common Questions About Roach Sprays

Which One Should You Buy?

Bengal Gold Roach Spray is the spray to buy for most homes. Its dry aerosol reaches the voids and cracks where roaches rest, the growth regulator targets the next generation, and buyers report it lasting for months.

Pick Raid Ant & Roach for budget spot treatment, Harris for an odorless trigger spray, Raid MAX Perimeter Protection for doors and pipe entries against roaches from outside and STEM for plant-based spot kills. Whichever you choose, put bait at the center of the plan.

Before you spray, place your bait first, then mark the cracks you plan to treat so the two stay apart.