The answer to 'why is my spider infestation' is that spiders are drawn to areas with an abundant food supply, such as other insects, and places that provide them with shelter and protection. Symptoms of a spider infestation may include seeing spiders crawling around, finding webs in corners or crevices, and noticing a higher number of insects that spiders feed on.
To address a spider infestation, you can try DIY solutions like sealing cracks and crevices, removing their food sources, and using natural repellents. However, if the infestation is severe or you have concerns about certain spider species, it's best to call a professional pest control technician who can properly identify the spider type and implement the most effective treatment plan.