In Florida, cockroach allergens stick around all year long and can trigger...

https://paxtonsuniquenews.rivetgarden.com/posts/why-do-professionals-bait-inside-voids-instead-of-fogging-the-whole-room

In Florida, cockroach allergens stick around all year long and can trigger asthma symptoms—even after the roaches are gone. These tiny particles hide in places like behind the fridge or near slow leaks