In Florida, cockroach allergens can stick around long after the roaches...

https://delta-wiki.win/index.php/What_Are_the_Hidden_Places_German_Roaches_Live_in_a_Kitchen%3F

In Florida, cockroach allergens can stick around long after the roaches disappear, triggering asthma and allergies year-round. Even in clean homes, these tiny particles can cause big problems