The other day we received a question from a reader through the All About Worms Facebook page about a bunch of millipedes that she found on her porch mat. The reader lives in Sacramento, CA, where the weather has been cold and damp recently, and she was wondering what “these little guys” on her porch mat are. Presumably, the reader didn’t know they were millipedes, so we’ve basically already addressed her question, but we’ll flesh out our answer a bit below, explaining why we think she found millipedes and not something else.