Spiders, specifically the brown recluse spider, which is the most common variety of spiders in houses everywhere, are usually hidden during the day in furniture, word framing, boxes, basements and attics.  They usually roam around at night and it is quite difficult to catch them since they run fast.

A bite from a brown recluse spider can go unnoticed at first; the bite itself only feels like a bee sting. But the venom in a brown recluse spider’s bite is very potent and potentially deadly. It’s hemotoxic – it destroys red blood cells. Common symptoms of a brown recluse spider bite include reddened skin at the bite site (blisters also occur sometimes), pain and itching a few hours after the bite, and sores and/or tissue death (necrosis) around the bite site. Some people also have systemic reactions like fever, nausea, vomiting, and rashes across the body. If you think you are bitten by a brown recluse spider, seek medical attention right away.