In Florida, cockroach allergens can linger long after the roaches disappear,...

https://astro-wiki.win/index.php/What%E2%80%99s_the_Simplest_Way_to_Figure_Out_if_Roaches_Are_Part_of_Our_Asthma_Problem%3F

In Florida, cockroach allergens can linger long after the roaches disappear, making asthma symptoms worse for many families year-round. Even a few hidden spots can cause problems because these allergens stick around in dust and crevices