How to stop rats from walking in plastic sewage pipe and damaging it

bathroompipesewertoilet

A rat has scratched open a big hole in a plastic sewage pipe near the toilet. After closing the hole with a metal plate and taping it with power tape, the rat has started scratching again. How to stop it from destroying the pipe again?

Best Answer

Step one: eliminate the rats.

Step two: find their means of ingress and block it off.

Pictures of the pipe where it exits the house, the cover on the access port of the tank, and the area of the ground that's above the tank would help suggestions flow in to accomplish these steps. Failing that, those are the places that you'd need to inspect, to figure it out.