In Florida, cockroach allergens can linger year-round, even after the roaches...

https://www.ready-bookmarks.win/in-florida-cockroach-allergens-can-stick-around-long-after-the-pests-have

In Florida, cockroach allergens can linger year-round, even after the roaches are gone, making asthma flare-ups tough to control. These tiny particles settle in spots like behind the fridge or in damp areas