What is a Septic Tank Baffle? "uring a septic inspection or pumping you should make sure the baffles are checked out. They will want to look for any type of rust or deterioration. You can save thousands of dollars by replacing your baffles with pipe tees instead of replacing your entire septic tank. The best way to help increase the lifecycle of your septic tank is by reducing... the amount of water that is used inside the home."