Spiders follow their food. Cut the insect supply, clear the webs, and treat the perimeter, and the spider count drops with it.
A high spider count usually means a healthy supply of the smaller insects they eat, so general insect control around the home is what brings the numbers down over time. Clearing webs and egg sacs from eaves, corners, and window frames removes the current generation and the next.
Most house spiders are harmless nuisances. Virginia has two worth caution - the black widow and, less commonly, the brown recluse - which warrant targeted treatment of harborage when found. Sealing gaps and reducing exterior lighting that draws insects rounds out the approach.
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A high count points to plenty of prey insects. Reducing the prey reduces the spiders.
Most are harmless. Black widows and brown recluses warrant caution and targeted treatment.
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