I have had a few listings purchased by buyers in India and China. Unfortunately, these listings do not have international shipping as an option. Is there any way to fully block them? I have done the buyer restriction (registered in countries I do not ship) but is there anything else?

This is aggravating as these are clearly non-paying bidders and really, even if they do pay with Paypal, I'll be refunding b/c they will most likely be future disputes.

Edit your buyer requirements within your eBay account.

Check the box that says "Block buyers who are in countries in which I don't ship."

Edit: it should be "Block buyers who are in countries to which I don't ship."
so far that's the only block I know and it looks like you already have it checked.

Are the buyers getting through ones who are registered on eBay in the U.S.? If so, and they are indicating foreign residence, invalid contact info alerts sound appropriate.