The 6 Best Roach Killers

There’s nothing that makes my skin crawl quite like flipping on the kitchen light late at night and seeing a cockroach scramble for cover. It’s a disgusting, violating feeling. Over the years, I’ve dealt with them in apartments, my first house, and even in the garage. So I’ve learned a thing or two about what actually works to get rid of them for good.

You can’t just use one product and call it a day, either. A good roach control plan often involves a few different tools. You need something for immediate kills, something for long-term prevention, and something to wipe out the nest you can’t see. After a lot of trial and error, these are the roach killers I trust to get the job done.

 

 

My Go-To Roach Killers for 2026

Ortho Home Defense Insect Killer

This 1-gallon jug of Ortho Home Defense is my first line of defense every spring and fall, and it costs about $16. I use the battery-powered wand to spray a complete barrier around the entire foundation of my house. I also hit the door thresholds, window sills, and anywhere pipes enter the house.

It creates a barrier that roaches and other bugs just don’t want to cross. And if they do, it kills them pretty quickly. It’s great peace of mind and has seriously cut down on the number of creepy crawlies I see inside. It doesn’t have a strong chemical smell, which is a huge plus for me.

The Downside: The included spray wand can be a little unreliable. Sometimes it clogs or the batteries die faster than I’d like, which is frustrating when you’re halfway around the house.

 

 

Advion Cockroach Gel Bait

For about $27, this is what you get when you have a real, serious infestation. When we moved into our current house, the garage had a nasty roach problem, and this is what finally wiped it out. It’s a gel that you apply in tiny dots in cracks, crevices, and under appliances—places where roaches hide.

The roaches eat the bait, go back to their nest, and die. Then, other roaches eat the dead ones and they die, too. It’s a chain reaction that gets the whole colony. It might seem slow at first, but after a week, the difference is incredible. This is professional-grade stuff that actually works.

The Downside: Applying this stuff takes time and effort. You have to get on your hands and knees and place dozens of little bait dots in hidden spots, which can be a real pain.

 

 

Combat Max 12-Month Roach Killing Bait

A pack of these bait stations costs around $13. I used these all the time when I lived in an apartment building where you never knew what your neighbors were doing. You just peel off the sticker and place them in cabinets, under the sink, and behind the toilet.

They’re perfect for dealing with those smaller German cockroaches that are so common in apartments. The bait gets carried back to the nest and kills the queen and the colony. It’s a “set it and forget it” solution that works for months without you having to spray anything.

The Downside: I’ve found these aren’t as effective on the really big roaches, like the American cockroach or Palmetto bugs. They work best on smaller species.

 

 

Raid Ant & Roach Killer Insecticide Spray

For about $5, you really can’t beat having a can of Raid under the sink. This is purely for those moments of panic when you see a roach out in the open. It kills on contact, and there’s a certain satisfaction in that immediate result.

I don’t rely on this for long-term control at all. It’s just for spot treatments. If I see one scuttling along the baseboard, I’ll grab the Raid. It does its job perfectly for those one-off encounters.

The Downside: This only kills the roaches you can see. It does absolutely nothing for the dozens or hundreds hiding in the walls or behind your fridge.

 

 

Black Flag Roach Motel Insect Trap

These sticky traps are super cheap, usually around $4 for a pack. I like to use them as monitors. I’ll slide one under the refrigerator and one under the sink in the guest bathroom to see if I have any activity going on.

They are completely non-toxic and pesticide-free, which is great because I have a dog. It’s just a cardboard box with a super sticky floor that traps bugs. It’s also a good, low-key way to deal with a very minor problem without breaking out the chemicals.

The Downside: Like the Raid spray, this only catches the few roaches that happen to wander into it. It won’t do anything to control a larger population or the nest.

 

 

Harris Boric Acid Roach Tablets

This box of boric acid tablets costs about $8 and it’s an old-school method that still works surprisingly well. Boric acid is a natural powder that clings to a roach’s body, and they ingest it when they clean themselves. It slowly dehydrates them and messes up their digestive system.

I tuck these tablets way back in areas where they won’t be disturbed or get wet—behind the stove, inside wall voids, or in the back of cabinets I rarely use. They work slowly but provide very long-lasting protection. Roaches also carry the powder back to the nest on their bodies, which helps kill others.

The Downside: Boric acid becomes completely useless if it gets wet. You can’t use it in damp basements or under leaky sinks, which are often prime roach hotspots.

 

 

How to Choose the Right Roach Killer

The best roach killer for you really depends on your situation. Are you trying to prevent roaches from getting in, or are you already dealing with a full-blown invasion? Seeing one roach doesn’t mean you need the same plan as seeing twenty.

For prevention, a perimeter spray like Ortho Home Defense is fantastic. To wipe out an existing colony, you need a bait. I’d go with the Advion gel for a serious problem or the Combat bait stations for a smaller one. Sprays and traps are best for dealing with the few roaches you see out in the open.

My best advice is to use a combination approach. Spray your foundation to keep new ones out, and put down some bait to kill any that are already inside. It’s more work, but it’s how you actually solve the problem instead of just treating the symptoms.