Several gray-brown worms were found by this man’s son in their bathtub after not having been home for several weeks. Our reader, who is based in a basement apartment in London says he would appreciate any thoughts on what the worm is, how it got there, and how to prevent their return.

Red, “free-moving, thread-like” worms of varying lengths were discovered in the bathroom of this concerned woman. She says they look “dangerous and unpredictable” given their speed, and worries that they might be parasitic to humans.