The answer to 'why is my centipede swarms' is that centipedes may swarm or appear in large numbers due to several common causes. Centipedes are attracted to damp, dark environments with plenty of organic matter and hiding places. Excess moisture, rotting wood, leaf litter, and other decaying materials can create ideal conditions for centipede populations to thrive and multiply.
Centipedes are typically solitary hunters, but they may congregate in large numbers if the environment provides ample food sources like insects, spiders, and other small invertebrates. Swarming behavior can also occur during mating season or when centipedes are seeking new nesting sites. If you're seeing a sudden influx of centipedes, it's important to address the underlying causes to eliminate the problem.