Can You ID these Roaches?

And maybe the best way to get rid of them (in my garage) ?

Most are over an inch long. I usually find one every few days or so belly up in the middle of the floor. Have not seen any live ones.

Thanks

 

Looks like an American wood roach to me. Primarily an outdoors roach, attracted to decaying trees and such. If they are in a home its usually from firewood or the like. Could possibly be an indication of some wet rotting garage framing if you can't pinpoint an exterior source.

 

I cannot find any moisture source in garage that might be attracting them.

This has been going on for 2-3 years. For at least 2 years, every 60-90 days, I have aggressively applied various chemicals and growth retardants. I started the program because I saw numerous live roaches (large and small) outside in deck box, storage sheds, and other areas, and a few in the house. Almost immediately we stopped seeing any live roaches. Now we only see occasional belly up large ones in the middle of garage floor.

Since they are all large, seems they are coming into garage already grown and not breeding here. If so cannot find entry way. Garage is surrounded outside with 20 ft of concrete in every direction. There is a wire mesh access to the crawl in the garage, and of course its nearly impossible to get a bugproof seal on the vehicle door. I douse these areas profusely with chemicals.

 

I can't tell for sure what they are but could also be Smoky Brown cockroach. In any case, I believe that what you have is primarily an outdoor specie. Granular baits are popular with the pro's regarding outdoor roaches. "Intice" is a popular granular bait. Have you tried placing glue traps inside the garage just to see how much activity there is? I'd try the flat rodent type of glue trap rather than the boxy, "roach hotel" type. Put them behind things that will stop non targets such as pets, etc from getting into them.


https://cockroachfacts.com/types-of-...wn_Cockroaches

 

PA,
Funny that you should suggest the flat glue traps. Less than 5 minutes ago I ordered them from Amazon to do exactly what you suggested!

 

Sounds like you're on top of the situation. I forgot to add that the Insect Growth Regulators (IGR's) only work on the faster breeding insects such as German/Asian roaches, fleas, flies, stored product pests. The larger type of roaches such as you have don't seem to be affected by IGR's though it sure isn't hurting anything to use it. Just an FYI.

In the event that you catch a non-target on the glue traps such as lizards, snakes, toads, etc you can use vegetable oil to release them from the glue if you get it in time. Maybe you already knew this.
If there is any kind of attic/storage space above the garage, get some bait/treatment/traps up there, too. The larger species like attic and even dry environments.

Keep us posted.

 

PA,
Can't send you a PM. Can you recommend a < $50, >12" reach granular (like for Ficam) duster? I cannot find one worth a crap.

I bought this one but it basically melted in one year...without being in the heat!

https://www.domyown.com/long-shot-pu...r-p-11745.html

 

I never used dusters for dispensing granules; I just hand scattered or threw it. I did use bellows dusters like this for dust application, but stopped using any with the long extension as they eventually would plug up. If it happens at home, that's one thing. On a job site, I quickly got tired of the hassle.
It's a shame that one failed so badly and quickly.

 

I looked and found the centrobulb duster that lasted us for years and had large enough opening for granules. Unfortunately it too is discontinued, but this one looks similar. When using granules, I'd consider using it with no tip screwed in, just the opening on the metal piece for granules. If the granules are small enough they may work with the tips anyway. I always used them without tips anyway, dusting included.

https://www.domyown.com/puffy-insect...2-p-21101.html

 

PA,
I tried that duster and it immediately clogged up with Ficam. I have two now that both seem to work well. They are

https://www.solutionsstores.com/b-g-1152-a-hand-duster and
https://www.solutionsstores.com/plantmates-scatter-box

The 1152 is great for the attic cause it throws 10 ft or so, but takes effort to crack.. The scatter box is good for outside. It takes much less effort .