Are these Roaches?

Definitely need an IGR in addition to the demand CS. It'll keep them from developing into the next generation. Tecko, Nyguard and a handful of others work very well. Going to take a while to get rid of them.
 
If they are rather large, like 1-2", they are what we in Texas call tree roaches. They do not normally live and breed indoors, they live and breed outside, and they are solitary. They come into the house looking for water when it is excessively dry outside so you will typically see them where water is present.
German roaches are the smaller species that live and breed indoors in large numbers. They are after food so you will typically see them in kitchens or areas where pet food is stored.
According to my parents, most of them have been found outside; only a few made their way inside the garage.

Those are definitely German Cockroaches. High quality gel baits and insect growth regulator products are the ticket to eradicating them.
Ugh. Alpine WSG and a bait gel?

I agree. I would take care of an infestation, but a roach here and there is preferable to chemicals every few months.
Chemicals are safe if used properly....or so they say. ;)

Definitely need an IGR in addition to the demand CS. It'll keep them from developing into the next generation. Tecko, Nyguard and a handful of others work very well. Going to take a while to get rid of them.
Day after the spray, 14 dead ones were found around the perimeter of the house. That number has continued to decline each day. Based on my research, it seems like non-repellents (such as Alpine WSG) are a better solution for cockroaches than what I used.

I'll probably go back in a few weeks and do another spray with Alpine WSG, but in the meantime, I think I'll put some bait gel in the known traffic areas. Thinking about rotating between Vendetta Nitro gel and Advion.
 
Despite regular outdoor perimeter sprays since this original post, the roaches came back with a vengeance last month. I even saw 2 run across the garage floor.

So, I performed a perimeter spray using FMC’s Scion and within 24 hours, over 20 dead ones appeared.

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Here’s the question: is there any way to prevent this issue from coming back every spring? I lived there for over 18 years and this has only become an issue in the last 1-2 years.
 
If they are in the yard mostly , I would buy a hose end sprayer, load that baby up with the pesticide of your choice, and spray the yard. I have found that I can keep them out of my house mostly if I also treat the lawn. Gives me a 50-100 ft barrier , like a moat. If the bugs make it through 50-100 feet of treated lawn, then the exterior spray on my house usually does them in. I see very very few bugs in my house in south Florida now.

Treat the lawn
Treat the perimeter of the house
And finally treat the interior of the house once to twice per year

I’m rotating Bifen and Demand CS
 
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If they are in the yard mostly , I would buy a hose end sprayer, load that baby up with the pesticide of your choice, and spray the yard. I have found that I can keep them out of my house mostly if I also treat the lawn. Gives me a 50-100 ft barrier , like a moat. If the bugs make it through 50-100 feet of treated lawn, then the exterior spray on my house usually does them in. I see very very few bugs in my house in south Florida now.

Treat the lawn
Treat the perimeter of the house
And finally treat the interior of the house once to twice per year

I’m rotating Bifen and Demand CS
No lawn in the yard, only cement. So, this really limits the treatment options if one were to remain in compliance.
 
I had an exterminator tell me that those types of cockroaches typically stay outdoors. When they venture indoors, they die quickly.

I usually see them out in the yard crawling around at the edge of the patio/lawn edge. I only see them indoors in the garage. Hot Shot bug bombs usually clear them out there; the type of bombs that do not require pilot light extinguishing. But these types typically do not kill spiders, which in some cultures, it is bad luck to kill spiders.

I don't like spraying insecticides/herbicides because of the dog. I do use Ortho Home Defense when the bugs (typically ants) get out of control. The wet winter we've had only makes the pest problem worse.

Diatomaceous earth sprinkled around the yard should help kill them off as well. I use this in the yard and around the walls in the garage. Ten pound bag will last a long time.
https://www.amazon.com/gp/product/B01N39V5SU/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
 
They look like those pesky German cockroaches. They just seem unusually difficult to get rid of.
No, they're not Geman roaches. Those are much smaller and slightly darker. They're anywhere in size from a small dot up to about 1/2" long and they do frequently live in sink drains and in sewers. German Roaches are the WORST to get rid of!

The ones in post #8 are what they call "Palmetto bugs" in Florida. They live outside in the leaf litter but they frequently get into the house. They're anywhere from about an inch to 1 3/4" long and are fairly easy to kill. If you step on one that can make a satisfying Crunch but they also explode and make a big mess. The preferred technique is to step on them just hard enough to kill them but without splattering them. Boric acid powder is pretty effective at killing them but seems to have no effect on the German roaches.
 
Food sources need to be buttoned up including pet foods.
And any open water like pet watering bowls. Roaches will even go into sink drains (and the over flows) and into toilet bowls after water. Wipe your sink dry at night and plug the drain and plug the overflow drain if it has one.
 
I think they are just about unavoidable here in Florida. We get them every summer.
Truth! And they're great hitchhikers. If you live in an apartment house that has somebody else moving in from Florida or other southern states are VERY likely to bring them in with their household goods and they'll soon infest the entire apartment building, even in states where they're not normally found. Ask me how I know!

If you're in an apartment and anyone has roaches then ALL of the apartments need to be sprayed at the same time. Otherwise the roaches just move from one apartment and then back again after they spray.

Demon WP is a good insecticide for use against them. It's a wettable powder that you mix with water and spray with a previously unused garden sprayer. Unlike petroleum based sprays, the water base won't damage plastics and the powder is fairly safe around people and most pets. But IIRC it's very toxic to bees and other insects and to fish so check the USDA and other credible sources before using it. Also put out roach baits and keep an eye on them and replenish them as needed and don't let them run out. If there's a lot of them roaches can go through that stuff FAST! Trust me, even if you get rid of all of the roaches that you see, if you let the baits run out, they WILL come back!

I use these because they're pet proof and it's easy to tell when the level gets low.
 
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Biggest problem with the German ones is, they like to build their nests in the walls, which makes them hard to eradicate once they get established. Bait stations can help, the roaches take the poison back to the nest and kill everything in it-but sometimes it takes multiple bombing/fogging to get rid of them.
Two friends of mine own pest contol companies. They drill a 1/4" hole in between every pair of studs in the wall and about 3" above the floor and then use a rubber bulb to blow a bit of boric acid powder into each cavilty in the wall and then plug the hole with a small plastic plug. It will kill the roaches inside of the walls.
 
No lawn in the yard, only cement. So, this really limits the treatment options if one were to remain in compliance.

Why can’t you spray the concrete? If there are hundreds/thousands of roaches out there, I’m spraying every crack and crevice of that concrete. All of it.
 
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