If spiders make you squeamish, centipedes take the ick factor to another level. Despite their name, centipedes don’t have 100 legs—but they might have upwards of 300 or as few as a couple of dozen.

As the year winds down, there are plenty of things to worry about. Is your home insulated well enough for the coming winter? Does your heating system need an update? Will your house be overrun by ...