Dawn,
I have some perennial crabgrass that seems resistant to just about everything.

How much do you want. I also seem to have a hornet's nest. I thought I had eradicated them, but it appears their kid, the one who spent the night at a friend's nest, came back and is doing a search and rescue for his relatives.

Either that, or it could be they were just working on building their home and had not moved in yet. Either way - they will be gone. You are welcome to them also.