Whole lotta spoilers...
[spoiler]Around the time HODS was made, bringing back Dracula was very popular particularly in the Hammer horror movies. Usually, an unstaking did the trick since they weren't dusted or otherwise had their bodies poofed away. This also allowed for a sequel in the off chance that Frid would reprise Barnabas.[/spoiler]
It didn't seem to matter how Dracula was dispatched in the Hammer films-- he was brought back in a different way for each sequel, but I don't recall that it was ever accomplished by an unstaking. If you haven't seen the Hammer Dracula series but plan to, please don't read this:
[spoiler]In
Horror of Dracula, he disintegrated after being exposed to beams of light. This immediately freed Mina from his control. But in
Dracula, Prince of Darkness, he was brought back very cleverly (I thought) by having a bleeding body drip over his remains. His destruction at the movie's end occurred when he fell into frozen water. Yet, in
Dracula Has Risen From the Grave, the blood of a priest revived his frozen body. His end came when he was impaled on a crucifix, and at the coaxing of a priest he vanished into the mist. In
Taste the Blood of Dracula, it was a ritual using a cloak, a ring, some red powder, and of course the requisite blood of a victim that revived him. But he was eventually sealed in a Church and fell onto the altar. We see him turn to dust, but in the sequel,
Scars of Dracula, I can't remember if they even bothered to address how he came back. He was set aflame by lightning and leapt off the castle roof to his destruction at its end.
[/spoiler]
This inspired the hilarious joke at the end of "Buffy vs. Dracula" in which [spoiler]she restakes him and quips, "You think I don't watch your movies. You always come back." When his mist starts to take shape again, she warns him, "I'm standing right here!"
[/spoiler]