@onlyjeeps
I just ordered the following online from the Milford, DE Walmart - took around 8 hours but I finally got the email that it was ready for pickup. Waiting out the storm to do so.
I was going to say that if you felt like a little road trip that it was available there. I just went online to make sure it still showed as available and for the heck of it I checked Middletown and it shows in stock there as well.
That said, I just did an online for pickup order a couple weeks ago to make sure the item I wanted was really in stock. The item was NOT to be found on display in the store but it was ready in the automated pickup locker for me (I guessed I got the last one, but it was still shown as available that evening when I checked out of curiosity).
It may be worth a try to order online from your Walmart.
Morton Pool Salt
EDIT: I read a negative comment about Walmart here somewhere yesterday and decided to share my experience. The storms didn't abate until late yesterday so I went this morning. I walked in to their "Pickup Tower" and scanned my phone's Walmart App display all without touching anything. The "Tower" replied that my order wasn't there at the tower and an associate was on the way. I already knew 560# of salt wouldn't fit in a locker so expected that. The associate showed up a couple minutes later and asked if I was me (I was the only one in pickup area), and told me to pull around to the side of the building to the grocery pickup area. I did so and another couples minutes later the associated came out with all the salt on a cart and helped me load it. A bag of salt was the only thing I touched during the entire experience.
Cudos to Milford, DE Walmart