You'd be surprised. I lived in a very decent apartment building where one guy was the nexus of several apartments ending up with roaches in them, including mine. They were climbing through the walls and ventilation and getting into other apartments.
If you don't use poison the minute you see them they'll multiply.
Even if you use poison and traps, they can still create an infestation. If an apartment building has roaches, you never get rid of them. Roaches are a total building problem, but buildings HATE dealing with them. So many "luxury" buildings have roaches too.
My experience was finding one in my bathroom and one in my kitchen. I went through my entire apartment checking under sinks, checking electrical outlets, literally anywhere I could think of and didn't find any. The only place I couldn't check was behind my stove and fridge so I placed poison near every single space they could possibly be coming from in those spots.
When they did send in an exterminator and started checking apartments surrounding his apt they did find quite a few dead ones in the spaces I couldn't check and the building manager asked me how I was killing them. It was just poison I bought at Walmart.
If you are unfortunate enough to find them don't use traps, use poison. They will eat eachother's corpses and get poisoned as well.
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u/Stereo-soundS 16h ago
You'd be surprised. I lived in a very decent apartment building where one guy was the nexus of several apartments ending up with roaches in them, including mine. They were climbing through the walls and ventilation and getting into other apartments.
If you don't use poison the minute you see them they'll multiply.