In Florida’s climate, cockroach allergens stick around long after the roaches...

https://fun-wiki.win/index.php/Why_Do_Roaches_Hide_in_Wall_Cavities_and_Appliance_Motors%3F

In Florida’s climate, cockroach allergens stick around long after the roaches are gone, which can worsen asthma symptoms. These tiny particles quietly trigger reactions in many homes, especially year-round