I'm a new home owner trying to learn about my house's infrastructure. After having to replace a p-trap in my bathroom I now know about p-traps and blocking sewer gasses. My question is how do basement floor drains work? Are they connected to the sewer? Do they have a trap that needs to be filled with water like p-traps?
Also, as an aside question, do insects routinely crawl into the house via the basement floor drain? Just wondering where all these house centipedes are coming from.