What Are Cockroaches Afraid Of? A Roundup of Common Natural Predators of Cockroaches

The natural predators of cockroaches include spiders, scorpions, centipedes, ants, toads, lizards, and geckos. Some birds also prey on cockroaches. In addition, cats, monkeys, and rats also prey on cockroaches, making them natural predators of cockroaches. Biological control is the most effective method of eliminating cockroaches.

Toads and frogs are natural predators of cockroaches. In the small animal rearing room of the National Institute of Genetics in Japan, cockroaches once multiplied to the point of becoming a plague, and people were at a loss as to what to do. Later, some toads were released into the rearing room. Before long, the cockroaches disappeared without a trace. A dissection revealed that the toads' stomachs were mostly filled with the remains of cockroaches.

Huntsman spiders are also natural predators of cockroaches, so they count as beneficial organisms. Because spiders have eight legs, and although they are distant relatives of insects they are not insects themselves, they cannot be called “beneficial insects.”

Geckos are also natural predators of cockroaches. They are small in build and can squeeze into the many nooks and crannies that people cannot reach to eliminate pests. Even if a gecko cannot get into the cockroach nest, it will wait at the entrance of the burrow and eliminate each one as it comes out.

The natural predators of cockroaches do not stop there. Besides toads, frogs, geckos, and spiders, scorpions, ants, parasitic wasps, lizards, kangaroos, monkeys, and rats are also common natural predators of cockroaches.

However, in real life, such as when eliminating cockroaches at home, because we would be afraid, it is impossible to keep many spiders just to catch cockroaches, nor is it possible to keep scorpions, ants, parasitic wasps, or other natural predators of cockroaches. So the main thing is still to properly manage the environment and avoid breeding cockroaches, which is the fundamental way.