Even if you don’t have an active infestation, roach feces is a bad thing to have around.
Cockroach droppings (and shed skin) contain proteins that trigger allergies and asthma attacks in some people. They may even cause children to develop asthma. These proteins can linger in the home even longer than the feces themselves, remaining dangerous for years after the roaches themselves have gone.
Not only that, but cockroaches’ eating and living habits bring them into contact with bacteria, mold, fungi, viruses, and worms that they leave behind in their feces.
Couple that with the fact that roaches go to the bathroom literally everywhere, including in the food that you and your family eat.