This is a really disgusting little creature called a "house centipede". Yes, squishing it will kill it easily... IF you can catch the little bugger! They run really really fast. They like low, damp areas such as basements, and tend to stick to the area of the floor nearest to the wall or furniture. No amount or type of chemical will kill these guys!! You need to set up glue traps in all the corners of every room in your house, quick, before they multiply. I had these in my basement and we tried everything to get rid of them. We bug bombed the basement after seeing about 3 of them, and though it didn't kill them, it did help to chase them out - there were probably 50 that were suddenly chased through the walls into the upper floors of the house! It was SO GROSS, it was like a bad sci-fi movie!! They remind me of the huge bugs in "Starship Troopers" (only a little smaller). You need to tell your parents as soon as they get home so they can get rid of them.