New bait for Christmas update and frost claw revenge

I haven’t bought 1 yet as I’m saving to buy 16 great Pyrenees and 16 frost claw but I have a questions to do with the new bait. are they single use meaning like you have to keep purchasing them? And also how long do they take like is it 4 hours like the normal bait or less?

And also is the last section of frost claws revenge glitching for anybody else, my Santa keeps randomly stopping just before you get to the portal thingy at the end and losing health saying it’s surrounded but there’s nothing there and when I swing my sword no lose of health to snowballs/snowman etc ?