I've got a 14 year old natural gas 400k BTU Hayward heater that I think has finally bit the dust. The control panel has been damaged due to rats as well as insulation chewed up and various other wires chewed. I've got bait stations outside and every time I open it to clean out a nest or a dead rat I leave fresh poison inside and reset the traps in there but they always come back in.
Since the heater is pretty old I'm thinking of replacing it, are there any brands or models that are more rat proof than others? The Hayward I have is pretty much wide open all the way around the base.