The answer to 'spider in my house' is that it is a common occurrence for many homeowners. Spiders can enter homes through cracks and crevices, or be brought in on boxes, furniture, or other items. Common symptoms include seeing the spider itself, webs, or other signs of spider activity.
The best solution depends on the type of spider and the severity of the infestation. For minor issues, homeowners can often take care of the problem themselves with DIY pest control methods like sealing entry points, removing webs, and using over-the-counter insecticides. However, for larger infestations or more dangerous spider species, it's best to call a professional pest control technician who can properly identify the spider and use more effective treatments.