Treating Dry-Clean-Only items for fleas – one year later

Hi, my dog got fleas in early September 2017. I went through the whole thing: treating my dog, vacuumed everything, various sprays, DE, and tons of laundry. And I haven’t seen any fleas since, and my dog is on a better flea med now. 
However, I had a bunch of Dry-Clean-Only items that I was worried might’ve gotten infested. They ranged from wool blankets to silk tops.  I decided to put them in a large plastic storage bin, with layers of diatomaceous earth throughout. I then taped over the seams of the bin and stuck it in my building’s basement. 
Now ten months later I still haven’t dealt with the items in the bin. I’m terrified of re-infesting if I open the bin, but I need some of the clothes that are in there. I figured I would take the DE covered items from the bin and put them directly into the dryer and run the dryer for at least an hour (and just hope that the various/delicate fabrics don’t get damaged). Does this sound like a good plan? I am worried that there might be dormant fleas biding their time inside their pupae, ready to hop out as soon as the bin is opened.  In theory they would have already come out of the pupae and come into contact with the DE and died, but I read that they can stay dormant in the pupae for a year or more waiting until they sense a host to live on. I live in Brooklyn, just to give an idea of the climate conditions.
So.. my main questions:

1. Is it possible/probable that there are any living fleas (at any life cycle stage) still alive in the bin?
2. If yes, I’ve thought about ‘tricking’ any dormant fleas into coming out of their pupae and into the DE by shaking the bin and putting it in the sun. The movement and heat might make them think that a host is near by. That way when I open the bin there are no live fleas left. Should I bother doing this before opening the bin to put the items in the dryer?
3. Should I proceed with my plan of putting everything from the bin into the dryer, DE and all?
4. Would this kill any and all remaining eggs, larvae, pupae and adults?

THANK YOU for any advice! Clearly I have anxiety about this and I know I sound overly worried, but I can’t help it, so any opinions or help would be much appreciated!