Cockroach allergens can stick around long after the roaches have left, posing a...

https://bizzmarkblog.com/is-it-true-cockroach-allergen-is-worse-in-southern-kitchens/

Cockroach allergens can stick around long after the roaches have left, posing a real problem for folks with asthma here in Florida. These tiny particles can trigger symptoms year-round, not just when you see a bug