On the outside of homes and in garages, this is the most common spider I see, it’s the Cross Orbweaver. Adult spiders become very visible in fall spinning webs across windows, and doorways. The females spiders will leave their webs and seek out protected locations to deposit between 300 to 900 eggs. The eggs are enclosed within a cocoon of yellow, silken threads, shaped in a hemisphere. Typical egg deposition sites include under the bark of dead trees and in cracks and crevices.