Location of InSync "indexes"

1

I suspect there are InSync indexes or work files of some sort on the Mac some place. I suspect mine are quite large. In my experience it’s nice to exclude these from Time Machine to avoid constant backup of the constantly changing files. What is the location of these files?

TIA.

2

@GregW Insync’s application data on OS X is located at ~/Library/Application Support/Insync/dbs.