my dogs keep chewing my truck wireing from the underside

[crackajacka]

ok my dog has chewed threw the wiring for my tank switch and anything else that hangs low enough plus my fuel line. im wondering what suggestions i could get to solve this problem without getting rid of the dogs and not moving my truck out of the fenced in part of my yard. i was thinking of goin with stainless braided hose to replace the rubber hoses but then again ive thought about just getting rid of the switch and having it draw from both tanks. what should i do? any help would be greatly appreciated