[jhein]

Originally Posted by Skidmark

I found out the hard way that wasp/hornet spray won't touch them.

The sprays have always worked really well for me. Right now I'm using Ortho Home Defense foaming spray. I like the foam especially for ground nests because it fills and covers the opening so when they try to get out they're killed.

I did put out a trap yesterday too to capture any that were not in the nest when I sprayed. It's got about 600 in it as of this morning and there weren't any flying around it. The nest has no activity at all.