Problem: House spiders
The more insects there are inside the home, the more likely spiders will live there. They live in their webs in secluded, rarely disturbed areas in and around the home.
Many kinds of spiders wander into the home. With only a few exceptions, these familiar creatures are harmless and cannot reproduce in the home. Spiders are often beneficial, feeding on other spiders and insects, including such household pests as flies and moths. The more insects there are inside the home, the more likely spiders will live there. Most spiders spin silken webs. Some, such as tarantulas, are active hunting spiders that do not spin webs. When spiders bite humans, it is usually because they have been squeezed, lain on, or somehow provoked. Only a few spiders, particularly the black widow and brown recluse, are dangerous to people, but their bites are rarely fatal.
Knock down webs with a broom or duster. To help keep spiders from entering the home, seal cracks, inspect and repair window screens, and clean up any debris outdoors that may harbor spiders or their prey.