Answer by
felicity709 (10)
Yellow sac spiders are small (1/4-1/3")white or yellowish colored spiders that are often found in homes. This spider is an active hunter at night, and during the day rests in a silken retreat it may build in corners, drapes, or behind picture frames. Its bite can cause minor swelling, blisters, or small necrotic ulcers, depending on sensitivity.