Keep this in mind if you start seeing lots of spiders around your place. Natural spider killer or preventer...take one cup of vingar, one cup of pepper powder, a teaspoon of oil and liquid soap. put it into a spray bottle and spay along the outside of your door(outside door) and along windows refresh after it rains.
Only cost $42 to make!!! Dig a 2ft deep hole four feet around. Purchase 25 4x4x12 pavers and 12 flagstone pavers. put two bags of 3/4" river rock in the bottom. Seen lots of these pits, but this one rocks!