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

https://suvzhinterworld.gumroad.com/p/what-are-the-hidden-places-german-roaches-live-in-a-kitchen

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