We have not seen any further activity since the last post so i am crossing my fingers this is behind us for now.
I will say the Tomcat and Valipril bait seemed to do it's thing if the directions are followed to the letter. the areas we were dealing with had gotten fairly large so I do believe compacting the tunnels helped in locating where they were active, placing bait, as well as the 2 or 3 we "GASSED".