Have you ever thought about what keeps the sewer waste and the smell of cockroaches away from your home? Well, it is a trap. According to the Rooter Hero , the traps must be in your home. Plumber Manhattan Beach suggests some of the requirements and purposes of the traps, which are written below : Requirement of Traps: A question arises: Do we need traps? What is the requirement of a trap? The requirement for traps are listed below: i) It should operate an efficient water seal under all flow conditions, both during and without water flow. ii) It should be self-cleansing. iii) No internal projections angles or contractions to permit unobstructed flow. iv) The trap should possess a smooth inner surface so that flow of water automatically secures each part and the possibility of dust, dirt, etc. Purpose of Trap: Traps are loop deals that keep the downstream pipe full of water to prevent gas accumulati...