In Florida, cockroach allergens can stick around long after the pests are gone,...

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

In Florida, cockroach allergens can stick around long after the pests are gone, making asthma symptoms worse for many families. These tiny particles hide in places you might not expect