Items made of metal risk rusting but these can be saved by soaking the rusted areas in vinegar and later scrubbing them with a wire brush. Any submerged devices should be looked at by a professional. However, it’s a different story when they’re completely submerged for long or are exposed to dirty water (as is the case with most floods). Rinse and repeat, that’s pretty much all you can do for any other devices and items in a flood. If these items were left wet for too long and/or were completely submerged, it’s safe to say that it’s best to move on from these.
