We moved in last November and just recently we have begun seeing white "things" that look like pumpkin seeds, but they're not. They are soft, but hold their shape and are hollow as well. They are not quite as smooth as seeds but look somewhat bumpy or slightly grainy. What kind of insect could this be coming from? Is it an egg or a cocoon? But we've seen no insects or bugs in the house at all. Any and all ideas are welcome. I'm calling a pest control man tomorrow.