This Double Bottle Trap is a great plumbing accessory under your kitchen and wash bowl sinks to suffice the needs of two sinks altogether. It effectively traps debris that has been expelled from the sink and keeps it from binding inside the channels structure. It also stops sewer gases from going into your home. Close to opposing the sewer gases, little insects and cockroaches, are also effectively stopped by the sink trap. Use the double trap to ensure that germs, bugs and cockroaches do not enter your home through the waste lines.