Unhappily, one of them dripped tree blood all over my car. I would have thought that a few weeks would be long enough that they would have stopped oozing. But no. I've got sap all down the driver's side window. It's also a disquieting shade of red-brown which does look a lot like dried blood.
I need some Goo-Be-Gone. Lots and lots of Goo-Be-Gone. Grr.