How can I use blacklist to ignore directories that include "-"?

[Stokers_23]

I have a monitor set up in inputs.conf on my UF as follows

[monitor:///log/test]
  blacklist = ppd.*\.log$|prod.*\.log$
  sourcetype = service_log
  index = nptest1

/log/test also contains some subdirectories I was to ignore, named application- or server- how can I edit my blacklist to ignore directories that end in a hyphen?

Thanks!

[richgalloway]

Have you tried this?

[monitor:///log/test]
blacklist = ppd..log$|prod..log$|-$
sourcetype = service_log
index = nptest1