Cell phone detection dogs

Last night I posted about the search and was waiting for information before including what I suspected.

Several people commented on oregon live about how they were looking for Kyron's body because they were "using SAR / maybe cadaver dogs" (their comments, not mine)  I know about cell phone detection dogs although I was not sure if they would be able to detect a cell phone that was left outside for a couple of months.  It was confirmed to me by an expert dog trainer that a cell phone detection dog would be able to find a cell phone left outside for an indefinite amount of time.

It is likely the dogs being used in the Kyron case (at present time) are cell phone detection dogs since law enforcement has repeatedly stated they have no information that Kyron is not alive.  Although maybe they have absolutely no idea what is going on and are searching for anything they can find.  Or maybe they are just going out for photo ops to feed the media frenzy.

If the cell phones were purchased to use at some point after Kyron disappeared (either the same day or after the divorce papers were served - or both --- both were reported as fact) then why would they be searching for them on the property Dede was working at on june 4th and not assume they were discarded in the numerous ponds, streams, rivers in the area - or taken to the coast and dumped in salt water which would have corroded it / them?

This entire search scenario is very strange.  If someone told them something, why would they not know exactly where to look instead of  rappelling down cliffs and searching fields like they do not have a clue what they are doing?