Pheromones: When cockroaches die, they release certain chemicals, including pheromones, which may attract other cockroaches to the area. These pheromones are used as a way for cockroaches to communicate and could signal a safe or suitable place for others to investigate.
Hidden Populations: Cockroaches often live in hidden colonies. When you kill a few, you might only be seeing a small portion of the infestation. Killing visible ones can sometimes disturb the rest of the colony, causing more to emerge in search of food or shelter.
Food Source: Dead cockroaches, if not cleaned up, can become food for other roaches. This can lead to an increase in visible cockroach activity as they scavenge for food.
Prevention Tips:
Clean up dead cockroaches promptly.
Use traps and bait stations that address the entire colony rather than focusing only on the visible ones.
Seal entry points and eliminate food and water sources to prevent attracting more.