In Florida, cockroach allergens can stick around all year, even after the bugs...

https://landensexpertthoughts.bearsfanteamshop.com/what-s-the-link-between-roach-droppings-and-asthma-symptoms

In Florida, cockroach allergens can stick around all year, even after the bugs are gone, making asthma worse for many families. These tiny particles hide in places like behind the fridge or under mulch