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

https://goodmenproject.com/everyday-life-2/florida-homes-have-a-year-round-asthma-trigger-the-rest-of-the-country-only-gets-in-summer/

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