Entomologist Dr. Matt Bertone said homeowners should avoid killing spiders found inside their residences [1].
This advice challenges common household instincts to eliminate arachnids. By maintaining a presence of spiders in the home, residents may inadvertently reduce their exposure to more dangerous pests that transmit diseases to humans [1].
Dr. Bertone said that spiders are generally not harmful to humans [1]. Instead, they act as a natural form of pest control within indoor environments [2]. These creatures target and capture a variety of insects that pose significant health risks to people [1].
Among the primary targets for indoor spiders are mosquitoes [1]. Because mosquitoes are known to carry and spread various diseases, the predatory behavior of spiders serves as a defensive layer for the household [2]. This biological interaction helps manage the population of disease-carrying insects without the need for chemical interventions [1].
While many people react to spiders with fear or a desire to remove them immediately, the entomologist suggested a shift in perspective [2]. Spiders occupy a specific ecological niche in the home that benefits the human inhabitants by removing pests that are often more difficult to track, and more dangerous, than the spiders themselves [1].
Maintaining this balance can lead to a healthier living environment. By allowing spiders to remain, homeowners utilize a free and efficient system for controlling the insects that frequently enter residential spaces [2].
“Spiders are generally not harmful to humans”
The recommendation to coexist with house spiders highlights a shift toward biological pest management. Rather than relying on synthetic insecticides, which can have secondary health effects, utilizing natural predators like spiders reduces the prevalence of vectors such as mosquitoes that transmit infectious diseases.
