House Spider

The house spider randomly selects its web sites. If a web does not yield prey (food) it is abandoned, another site is selected, and a new web built. Eventually, successful webs are constructed where air currents bring in prey. Survival is low in modern homes with low humidity and few insects, higher in garages, sheds, barns, warhouses, etc. because of more prey and generally higher humidity, and highes outdoors in protected places.

Centipedes

Typically found in areas of high moisture such as loose bark, in rotting logs, under stones, trash, piles of leaves and grass clippings, flower-bed mulch, etc., where their typical prey is found. Most centipedes are nocturnal or active at night. They occasionally invade structures, where they survive on flies, spiders, etc. Although they may be found anywhere in a house, the usual places are damp basements, bathrooms, damp closets, and potted plants. Centipedes are primarily carnivorous and obtain most of their moisture needs from their prey. Some species will sometimes feed on plant tissues causing injury.

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