I've a foolproof way to get those jackoff's out of my receiver.
I change the channel. I prefer hanging out above channel 40 anyway.
Not always but, free bands are usually free of J O's.
I've noticed a better class of operator usually chilling out above 40 (I prefer USB above 40.)
I'm not suggesting that anyone here is crying, but I have been known to use the phrase DON'T CRY QSY!
If skip is hot they'll be better chances of not only making contacts, but actually having a straight up QSO with your DX contact.
I've also noticed that if there's a station from Colorado, New Mexico, Florida, etc etc etc he's usually there having a rag chew session with his locals, and most don't mind a DX contact jumping in and joining in on that QSO.
As a matter of fact it's been my experience that those local DX stations enjoy having another DX'er join in.