I have this small utility on GitHub that cleans the Temp folder of Clarion Report files Cla*.tmp Cla*.wmf. Also CPCS Report and Tracker PDF special temp files.
Most of my User Apps have Code in the Frame shutdown to run this Utility … every 2 - 4 weeks.
When I first set it up I would be remoted in to an End User and see it remove 1000+ files.
Note in C 11 when AS was added the temp WMF files changed extension from .TMP to .WMF.