The answer to 'why is my spider recurring problem' is that spider infestations often recur due to a combination of factors, including the presence of a suitable habitat, abundant food sources, and the ability of spiders to quickly reproduce. Spiders are opportunistic pests that can easily find their way back into your home, even after an initial treatment.
Some common causes of recurring spider problems include cracks and crevices in the home's exterior that provide entry points, nearby vegetation or clutter that offers hiding places, and a lack of effective long-term pest control measures. Additionally, certain spider species are more resilient and can quickly re-establish their populations, even after a successful treatment.