SHould I chance it? - Wax question

I've got about 2/3s of my line pulled at the moment. Planning on resetting this coming weekend so last night I was checking over the sets I'd pulled to make sure they had tags still, would set ok, and knocked the dirt off of them.

I suppose they should be re-boiled and waxed? Only 1 of what I've pulled has made a catch, but many are pretty beat up and have some rust here and there. Is that what you guys would do is re-boil/wax?

Speaking of wax, I have a new bucket of wax from this year at my brother's house, which isn't too far away, but last night I was sorting through my gear and stumbled on a metal bucket. I then realized what it was and checked and sure enough, it's our old wax. Several years old. Been sitting in my basement with a lid, but it wasn't on terribly tight. Wax is yellow in color and has been exposed to God knows what down there with me working on things. Probably not a good idea to use it, but what if I scraped off some of it that would have likely collected the odors? Or should I just junk it?