Report any suspected toilet spills/leaks as soon as possible to your mx shop. I have been involved in many toilet induced corrosion repairs on various citation types and as extreme as a no1 stringer change spilce as far forward as the main door on a 3 month old cj 3. A spill will soon track forward and aft in service and all lower antenna fus mating faces will become contaminated with corrosion following very soon after. Be sure that the seal cup on the aft px bulkhead is inspected in addition on the cj range as this is primary structure and expensive to change if it starts to go.
Its worth admitting a spill and spending the extra money required to get in there and clean things properly under the floors than risk the almost inevitable rot.
As far as the relief tube ad goes i never came across any related corrosion as a result of the required inspections.... I worked in a busy citation service centre at the time.