Jan 20, 2016
MSN - Aside from pets, family members, or roommates, many of us often go weeks without seeing another living thing in our homes. But appearances can be deceiving. We are, in fact, surrounded by arthropods—insects, spiders, centipedes, and other animals with hard external skeletons and jointed legs. They are the most successful animals on the planet, and the walls that shield our homes to the elements are no barriers to them.