Although some spiders in the Hamilton area like moisture and congregate toward bathrooms, basements, crawl spaces and other damp parts of buildings, others prefer dry, warm areas such as subfloor air vents, and upper corners of rooms and attics.
If your home has many entry points or you have some cracks or openings in walls or by doors, you may be inviting spiders into your home. If there are any rooms or places that do not get traveled through much, then those areas may be where spiders will congregate to stay safe so they can make their webs in peace.
Make sure common entry points, like windows and doors, are all sealed correctly and that cracks within wall foundations are caulked. Screens can help with prevention. This is the best defense against house spiders.